ChangeLog 26.8 KB
Newer Older
Philip Carns's avatar
Philip Carns committed
1
2
3
--------------------------
Darshan Release Change Log
--------------------------
4

5
6
7
8
9
10
Darshan-3.1.3
=============
* disable instrumentation for mmap when dynamically linking; this avoids a
  potential deadlock condition on Cray systems using dynamically linked
  executabes.  Reported by Cristian Simarro for dynamic linking case.

Philip Carns's avatar
Philip Carns committed
11
12
Darshan-3.1.3-pre1
=============
13
14
15
16
17
18
19
* add new DxT instrumentation modules to provide fine-grained read/write
  operation tracing at both the POSIX and MPI-IO layers
    - this functionality should be enabled at runtime by exporting the
      DXT_ENABLE_IO_TRACE environment variable
    - trace output is stored within Darshan's traditional log file format
    - a corresponding trace parser (darshan-dxt-parser) is offered within
      darshan-util to allow the DxT trace modules to be parsed and displayed
20
    - this software was contributed by Cong Xu and Intel's HPDD division.
21
22
* add logic to allow Darshan to capture command line arguments from Fortran
  applications (contributed by Cristian Simarro)
23
24
* skip instrumentation attempts for anonymous mmap() calls; this avoids a
  potentential deadlock condition when used with hugepages on Cray systems.
25
  Reported by Glenn Lockwood for static linking case.
26
27
28
* fix segmentation fault in statistics collection for applications that issue
  operations with a large number of distince access sizes or strides on the
  same file.  Reported by Glenn Lockwood.
Philip Carns's avatar
Philip Carns committed
29
30
31
32
33
* disable HDF5 module by default unless enabled using --enable-HDF5-post-1.10
  or --enable-HDF5-pre-1.10 configure arguments.  These options
  vary the wrapper prototypes to match the corresponding HDF5 library ABI.
  The initial patch for HDF5 1.10 compatibility was contributed by 
  Karl-Ulrich Bamberg.
34
35
36
37
* modified Darshan's path exclusion logic to include a whitelist to prevent
  I/O to/from Cray's Datawarp service from being filtered out (it is located
  within the /var directory, which historically has been excluded). Reported
  by Glenn Lockwood.
Philip Carns's avatar
Philip Carns committed
38

39
40
41
42
Darshan-3.1.2
=============
* bug fix in resolving underlying call to fopen64 when using the LD_PRELOAD
  instrumentation mechanism
43
44
45
* bug fix to make sure Lustre module headers are installed when installing
  darshan-util
  - reported by Matthieu Dorrier
46

Philip Carns's avatar
Philip Carns committed
47
48
49
50
51
52
Darshan-3.1.1
=============
* bug fix to MPIIO_F_WRITE_START_TIMESTAMP, which may have produced incorrect
  timestamps in some cases
  - reported by Wucherl (William) Yoo

Shane Snyder's avatar
Shane Snyder committed
53
54
55
56
57
58
Darshan-3.1.0
=============
* add stdio I/O library instrumentation module (Philip Carns)
    - this handles instrumentation of file stream I/O functions
      like fopen(), fprintf(), fscanf(), etc.
    - this module also captures stats on the standard streams (stdin,
Shane Snyder's avatar
Shane Snyder committed
59
      stdout, & stderr)
Shane Snyder's avatar
Shane Snyder committed
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
* add Lustre instrumentation module (Glenn Lockwood)
    - this module provides Lustre striping details (e.g., stripe
      width, stripe size, list of OSTs a file is striped over)
* add new mmap-based logging mechanism that allows Darshan to
  generate output logs even in cases where applications don't
  call MPI_Finalize()
    - these logs are uncompressed and are per-process rather
      than per-job
* add the darshan-merge utility to darshan-util to allow per-process
  logs generated by the mmap-based logging mechanism to be converted
  into Darshan's traditional compressed per-job log files
* augment the POSIX module timestamp counters to also include a
  LAST_OPEN & FIRST_CLOSE counters to give more details on application
  I/O intervals
* avoid saving duplicate mount point entries in Darshan log files

76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
Darshan-3.0.1
=============
* bug fix in darshan logutil mount parsing code that was
  causing file paths to be matched to the first mount point
  with a common prefix rather than the one with the longest
  common prefix
* bug fix in the darshan-util bzip2 configure check that
  was accidentally overwriting Darshan's LDFLAGS
* minor bug fixes to IO start time counters in all modules
  to set IO start time to the actual first start time rather
  than the first IO op to complete
* update darshan-util perl scripts to get perl bin from
  user's path, rather than from /usr/lib (reported by
  Kay Thust)
* update Darshan's fortran and cxx compiler wrapper generators
  to automatically detect MPICH library names on BG/Q
* fix bug that was calculating Darshan's agg_perf_by_slowest
  performance metric incorrectly
* add performance estimate info to darshan-job-summary
  graphs

97
98
Darshan-3.0.0
=============
99
100
101
102
* install darshan-null-log-format.h header when installing
  darshan-util component, otherwise compiler errors are
  generated when building external tools that use
  libdarshan-util
103
104
105
106
107
* update docs to give debugging tips for cases where
  Darshan logs are not generated
* fix shared library regression test script to check for
  potential errors with Darshan symbols rather than
  failing silently in these cases
108
109
110
111
112
113
114
115
116
117
118
119
120
* bug fix for determining minimum non-zero counters in
shared file reductions in all modules
* loosen Darshan's PMPI symbol check to prevent inadvertent
  disabling of Darshan for some MPICH builds
* update runtime docs to give information on upgrading Darshan
* bug fix for resolving MPI_Gather and MPI_Barrier when LDPRELOADing
  Darshan's shared libraries (reported by Richard Hedges and Rob Latham)
* add more helpful error handling when opening 2.x version log files
* port darshan-diff utility over to new log file format
* fix numerous configure bugs on Cray systems
* add synthetic benchmarking hooks for testing Darshan's shutdown
  procedure

121
122
123
124
125
126
127
128
129
130
131
132
133
134
Darshan-3.0.0-pre3
=============
* add module-specific version fields to header to allow utilities
  to handle different versions of a module's I/O data for backwards
  compatibility -- NOTE: this breaks the log file parsing for logs
  obtained using Darshan-3.0.0-pre2 & Darshan-3.0.0-pre1 
* bug fix in regression test scripts for setting proper environment
  variables to use MPI profiling configuration for Fortran apps
* bug fix in bzip2 log writing implementation in darshan-logutils
* possible race conditions resolved in each module's shutdown code
* general code, comment, and documentation cleanup
* addition of module-specific counter descriptions printed prior
  to parsing a modules I/O data in darshan-parser

135
136
137
138
139
140
141
142
143
144
Darshan-3.0.0-pre2
=============
* add fix to install appropriate headers for linking external
  applications with darshan-util (reported by Matthieu Dorier)
* add darshan-util Ruby bindings for the new modularized version
  of Darshan (3.0) (Matthieu Dorier)
* add enhancement to darshan-runtime to allow per-module instrumentation
  memory to be user configurable using a configure option or a runtime
  environment variable

145
146
Darshan-3.0.0-pre1
=============
147
148
149
150
151
152
153
154
155
156
157
158
159
160
* new version of Darshan with the following features/improvements:
    - hooks for developers to add their own instrumentation module
      implementations to capture new I/O characterization data
        - these instrumentation modules can be used to instrument new
          I/O interfaces or gather system-specific parameters, for instance
    - modularized log format allows new module-specific utilities to
      access their I/O characterization data independently
        - this new format also allows new counters to be added to existing
          instrumentation modules without breaking existing utilities
    - Darshan logs now contain a mapping of Darshan's unique record
      identifiers to full file names, instead of fix-sized file name
      suffixes
    - a new instrumentation module for capturing BG/Q-specific parameters
      (BG/Q environment is automatically detected at configure time)
161
      (implemented by Kevin Harms)
162
163
164
165
166
167
168
169
    - new darshan-parser and darshan-job-summary output to utilize the
      new modularized log format
* updated documentation outlining changes in this release, as well as
  steps for adding new instrumentation modules is given in the top-level
  'doc' directory.
    - documentation for configuring and using the darshan-runtime and
      darshan-util components are mostly the same and still located in
      their respective directories ('darshan-runtime/doc' and 'darshan-util/doc')
170

171
172
173
174
darshan-2.3.2-pre1
=============
* Fix gnuplot version number check to allow darshan-job-summary.pl to work
  with gnuplot 5.0 (Kay Thust)
175
176
177
* Fix function pointer mapping typo in lio_listio64 wrapper (Shane Snyder)
* Fix faulty logic in extracting I/O data from the aio_return 
  wrapper (Shane Snyder)
178
* Fix bug in common access counter logic (Shane Snyder)
179
* Expand and clarify darshan-parser documentation (Huong Luu)
180

Philip Carns's avatar
Philip Carns committed
181
darshan-2.3.1
Philip Carns's avatar
Philip Carns committed
182
=============
183
184
185
* added documentation and example configuration files for using the -profile
  or $MPICC_PROFILE hooks to add instrumentation to MPICH-based MPI
  implementations without generating custom wrapper scripts
186
* Add wrappers for mkstemp(), mkostemp(), mkstemps(), and mkostemps()
Philip Carns's avatar
Philip Carns committed
187
  (reported by Tom Peterka)
Philip Carns's avatar
Philip Carns committed
188
* Change OPEN_TIMESTAMP field to report timestamp right before open() is
189
190
  invoked rather than after timestamp after open is completed.
  NOTE: updated log format version to 2.06 to reflect this change.
191
192
* Change start_time and end_time fields in job record to use min and max
  (respectively) across all ranks
193
194
* Fix bug in write volume data reported in file system table in
  darshan-job-summary.pl (reported by Matthieu Dorier)
Philip Carns's avatar
Philip Carns committed
195
196
* Clean up autoconf test for zlib and make zlib mandatory (reported by Kalyana
  Chadalavada)
197
198
* add --start-group and --end-group notation to Darshan libraries for Cray PE
  2.x environment to fix link-time corner cases (Yushu Yao)
199
* improve y axis labels on time interval graphs in darshan-job-summary.pl
Philip Carns's avatar
Philip Carns committed
200
  (reported by Tom Peterka)
201
202
203
204
205
* misc. improvements to darshan-parser --perf output (reported by Shane
  Snyder)
  - indicate which rank was slowest in unique file results
  - label I/O vs. meta time more clearly
  - include unique file meta time in agg_perf_by_slowest calculation
Philip Carns's avatar
Philip Carns committed
206
* added regression test script framework in darshan-test/regression/
Philip Carns's avatar
Philip Carns committed
207
208
209
210
211
  - currently support platforms include:
    - Linux with static linking and generated compiler wrappers
    - Linux with static linking and profiler configuration files
    - Linux with dynamic linking and LD_PRELOAD
    - Blue Gene/Q with static linking and profiler configuration files
212
213
* update darshan-gen-fortran.pl and darshan-gen-cxx.pl to support new library
  naming conventions in MPICH 3.1.1 and higher
214
* update documentation to reflect known issues with some versions of MPICH
Philip Carns's avatar
Philip Carns committed
215
216
217
* Cray platforms: modify darshan-runtime so that link-time instrumentation 
  options are only used when statically linking via Libs.private.  
  (reported by Kalyana Chadalavada)
Philip Carns's avatar
Philip Carns committed
218

219
220
221
222
223
darshan-2.3.0
=============
* Fix incorrect version numbering in darshan-runtime component of Darshan
  2.2.9, reported by Jean-Guillaume Piccinali

224
darshan-2.2.9
Philip Carns's avatar
Philip Carns committed
225
=============
Philip Carns's avatar
Philip Carns committed
226
227
228
229
230
231
* Bug fixes:
  - Fix mnt table overflow if a large number of file systems are mounted, 
    reported by David Shrader.
  - Fix argument parsing for darshan-convert, reported by Mouhamed Gueye.
  - Fix metadata annotation overflow in darshan-convert, reported by 
    Mouhamed Gueye.
232
233
  - Fix const-correctness in dynamic library when built against MPI 3.x
    libraries.
234
235
  - Fix "undefined symbol: dlsym" error when using preloaded dynamic library
    on some platforms, reported by Florin Isaila.
236
  - Normalize timestamps to always be relative to MPI_Init().
Philip Carns's avatar
Philip Carns committed
237
238
  - Better library name matching in compiler wrappers to handle more MPICH
    variations on Blue Gene systems.
Philip Carns's avatar
Philip Carns committed
239
240
  - Fixed header dependency problems when using darshan-logutils.h in external
    programs (Shane Snyder).
241
* Enhancements:
Philip Carns's avatar
Philip Carns committed
242
  - Add support (both in documentation and in provided module files) for
243
    Cray PE 2.x.
244
245
  - Honor CC variable to allow darshan-util to be built with other compilers
    besides gcc.
246
247
248
  - Update documentation to clarify the interaction between rpath and
    LD_PRELOAD when instrumenting dynamic libraries, issue reported and
    investigated by Davide Del Vento.
249
250
  - Ability to disable shared-file reduction by setting the
    DARSHAN_DISABLE_SHARED_REDUCTION environment variable.
251
  - More thorough output from darshan-parser --perf, suggested by Huong Luu.
252
  - Increased metadata annotation room from 64 bytes to 1KiB in header.
Philip Carns's avatar
Philip Carns committed
253
254
  - CP_F_{FASTEST/SLOWEST}_RANK_TIME counters now take MPI-IO time into
    account, not just POSIX time, issue reported by Huong Luu.
255
256
257
258
259
260
261
262
  - Better handling of systems with many mounted file systems (after which
    point Darshan will assume file resides on / file system), issue reported
    and investigated by David Shrader:
    - Track up to 64 rather than 32 mounted file systems at runtime.
    - Increase header space available for storing mount point information in
      log file from approximately 1 KiB to approximately 3 KiB.
    - Prioritize storing information about non-NFS volumes over NFS volumes
      if too many file systems are mounted to record them all.
Philip Carns's avatar
Philip Carns committed
263
  - Added darshan-util pkgconfig file (Shane Snyder).
264
265
  - Added --enable-shared configure option to darshan-util to build and
    a shared library version of libdarshan-util
Philip Carns's avatar
Philip Carns committed
266

Philip Carns's avatar
Philip Carns committed
267
darshan-2.2.8
268
=============
269
270
271
272
* WARNING: please note that the Darshan module file for Cray environments has
  been updated, especially in the DARSHAN_POST_LINK_OPTS variable.  Please
  update your module file accordingly when upgrading from 2.2.7 or earlier 
  on Cray platforms.
Philip Carns's avatar
Philip Carns committed
273
274
* Improved ability to analyze I/O activity related to particular files 
  opened by an application
Philip Carns's avatar
Philip Carns committed
275
  - darshan-summary-per-file.sh script to generate a separate pdf summary for
Philip Carns's avatar
Philip Carns committed
276
    each file opened by an application. Developed by Rob Latham.
Philip Carns's avatar
Philip Carns committed
277
  - Added --file-list and --file-list-detailed options to darshan-parser to 
Philip Carns's avatar
Philip Carns committed
278
    list files opened by an application along with brief statistics
Philip Carns's avatar
Philip Carns committed
279
280
  - Added --file option to darshan-convert to filter out activity for a
    specific file from a Darshan log
281
282
283
* Add wrappers for POSIX AIO operations (fixes tracking of underlying POSIX
  operations resulting from nonblocking MPI-IO operations.  Bug reported by
  David Shrader.)
284
285
286
287
288
289
* Fix compile-time errors when Darshan is configured for use with MPICH 3.x 
  installations with const correct MPI function prototypes. Also affects 
  MPICH 1.5+ installations with optional const support.  Reported by Yushu Yao.
* Fix segmentation fault when using LD_PRELOAD instrumentation on programs
  that use MPI_Init_thread() rather than MPI_Init().  Reported by Myriam
  Botalla.
290

291
darshan-2.2.7
Philip Carns's avatar
Philip Carns committed
292
293
294
=============
* Updated Cray installation documentation for cleaner integration in Cray
  environments
Philip Carns's avatar
Philip Carns committed
295
296
297
298
* Fix bug that recorded incorrect device ID (and therefore incorrect mount
  point mapping) if stat() was called before open() on a file
* Store version number of the darshan runtime library in the log file 
  metadata (see lib_ver in darshan-parser output)
Philip Carns's avatar
Philip Carns committed
299

Philip Carns's avatar
Philip Carns committed
300
darshan-2.2.6
301
=============
302
* Bug fixes:
303
  - make sure to honor user-specified hints passed in at runtime
304
305
    via the DARSHAN_LOGHINTS env variable.
  - include fread and fwrite in darshan-job-summary.pl read and write counts
306
  - fix segmentation fault on invalid arguments to darshan-parser
Philip Carns's avatar
Philip Carns committed
307
308
309
310
311
312
313
314
315
316
317
318
319
* Performance enhancements:
  - collect mount point information at rank 0 and broadcast to all 
    processes to avoid excess file system traffic on startup
  - change default MPI-IO hints for writing log file to
    romio_no_indep_rw=true and cb_nodes=4 to improve log creation performance
* Install libdarshan-util and headers during installation process for
  darshan-util; patch contributed by Matthieu Dorier
* Detect PMPI support at link time when using compiler scripts produced
  by the darshan-gen-* utilities.  This avoids link problems when Darshan
  compiler wrappers are used with the ADIOS dummy MPI library; reported
  by Jingqing Mu
* Support MPICH_{CC/CXX/F77} environment variables in compiler scripts
  produced by the darshan-gen-* utilities
Philip Carns's avatar
Philip Carns committed
320
321
* Add instrumentation of startup time, enabled via DARSHAN_INTERNAL_TIMING
  environment variable
Philip Carns's avatar
Philip Carns committed
322
323
* Rename cp-shutdown-bench test utility to darshan-shutdown-bench and enable
  benchmarking hooks in library by default so that darshan-shutdown-bench 
324
  can be used with any Darshan installation
325
* Remove deprecated --enable-st-dev-workaround configure option
326
* Misc. documentation updates
327

328
darshan-2.2.5
329
330
331
332
=============
* Fix bug in mount point identification when --enable-stat-at-open option is
  not used.  In Darshan 2.2.4, some file entries were recorded as using the "/"
  file system regardless of their location.
333
334
* Update patches and documentation for Cray xt-asyncpe environment 5.12 or 
  higher; contributed by Yushu Yao.
335
336
* Update documentation to no longer recommend --enable-stat-at-open option on 
  any systems
337
338
* Fix unresolved symbols error when linking non-MPI programs with Cray
  compiler.  Reported by Yushu Yao.
339
340
341
342
343
344
345
346
* Use fstat() in place of stat() for detecting file information when
  --enable-stat-at-open option is used
* Use statfs() at startup to detect default block size for supported file
  systems
* Added --enable-group-readable-logs configure option, which will cause
  Darshan to to generate log files with the group read permission bit set.
  This option is useful in conjunction with deployments that set the setgid
  bit on log directories.
347

Philip Carns's avatar
Philip Carns committed
348
darshan-2.2.4
Philip Carns's avatar
Philip Carns committed
349
=============
Philip Carns's avatar
Philip Carns committed
350
351
* Disable extra stat() of newly opened files by default.  This improves 
  performance on shared files for some platforms.  Reported by Yushu Yao.
Philip Carns's avatar
Philip Carns committed
352
353
354
  - prevents Darshan from reporting SIZE_AT_OPEN, FILE_ALIGNENT, and 
    DARSHAN_FILE_NOT_ALIGNED values
  - features can still be enabled via --enable-stat-at-open option
355
356
* Fix missing -lz in post ld flags reported by Yushu Yao.  Fixes a link-time
  error for some corner-case applications.
357
358
* Fix bug in Cray compiler script patches that was setting compiler flags 
  incorrectly.  Reported by Yushu Yao.
359
360
  WARNING: if you are using a previous Darshan release (2.2.3 through
  2.2.4-pre4) on a Cray platform, please re-patch your compiler scripts.
361
362
363
364
* Update darshan-gen-* scripts to support the potential for additonal LDFLAGS
  or CFLAGS that appear before the object or source file in the compile or
  link commands.  This fixes compatibility with some mvapich2 installations,
  reported by Dragos Constantin.
Philip Carns's avatar
Philip Carns committed
365

Philip Carns's avatar
Philip Carns committed
366
darshan-2.2.3
Philip Carns's avatar
Philip Carns committed
367
368
369
370
=============
* improved Cray XE6 support
  - support for GNU, PGI, Cray, Pathscale, and Intel compilers
  - patch adding Darshan capability to system compiler scripts
Philip Carns's avatar
Philip Carns committed
371
372
373
  - software module, including testing and features contributed 
    by Yushu Yao and Katie Antypas of The National Energy Research 
    Scientific Computing Center (NERSC)
Philip Carns's avatar
Philip Carns committed
374
  - improved documentation
Philip Carns's avatar
Philip Carns committed
375
376
377
378
* minor bug fixes:
  - properly detect cxx library name when generating BG/Q compiler wrappers
  - improve timing mechanism for cp-shutdown-bench benchmark
  - improve hashing to avoid log file name collisions
Philip Carns's avatar
Philip Carns committed
379

380
381
382
383
384
385
386
387
darshan-2.2.2
=============
* bug fixes:
  - remove debugging message that was inadvertently included in
    MPI_File_sync() wrapper
  - fix potential hang if the --with-log-path-by-env argument was used at 
    configure time but the environment variable was not set at run time

Philip Carns's avatar
Philip Carns committed
388
darshan-2.2.1
Philip Carns's avatar
Philip Carns committed
389
390
391
=============
* significant improvements to how counters are handled in multi-threaded
  applications
Philip Carns's avatar
Philip Carns committed
392
393
* initial (rough) documentation for using Darshan in Cray
  programming environments with static linking
Philip Carns's avatar
Philip Carns committed
394
* bug fixes:
Philip Carns's avatar
Philip Carns committed
395
396
  - escape special characters in mount point paths in darshan-job-summary.pl
    (reported by Mouhamed Gueye)
Philip Carns's avatar
Philip Carns committed
397
398
399
400
401
  - workarounds for various runtime problems with cuserid() and stat() in  
    Cray environments
  - build problems with darshan-utils on some versions of OSX
  - accurate shared file statistics for libraries that use deferred opens

402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
darshan-2.2.0
=============
* split darshan into separate packages:
  - darshan-runtime: for runtime instrumentation
  - darshan-utils: for processing darshan log files
* changed default output file name for darshan-job-summary.pl to be based on
  input file name rather than summary.pdf
* reorganized init and finalize routines so that can be linked separately (to
  allow for easier integration with other instrumentation tools)
* add -cc, -cxx, -f77, -f90, and -fc support to compiler scripts generated by
  the darshan-gen-*.pl scripts
* bug fixes:
  - potential MAX_BYTE overflow on 32 bit systems
  - incorrect pread and pwrite offset tracking
  - corrections to darshan-job-summary variance table
  - better runtime error handling if bzip or gnuplot tools are insufficient
  - improvements to time range in darshan-job-summary graphs
419
420
421
422
* documentation:
  - improved documentation for both the darshan-runtime and darshan-util
  portions of Darshan can be found in the respective doc/ subdirectory for
  each
423

424
425
426
427
428
darshan-2.1.2
=============
* improved error handling when writing log files.  If a write fails then the
  log file will be deleted and a warning will be printed to stderr.

429
darshan-2.1.1
430
=============
Philip Carns's avatar
Philip Carns committed
431
432
433
434
435
436
437
438
439
* new darshan-convert command line utility for converting existing log files,
  with optional anonymization and optional bzip2 compression
* bzip2 support in command line utilities (but not in the darshan library
  itself)
* updated log file format that allows for string key/value pairs to be stored
  in the header
* added ability to set MPI-IO hints when writing darshan log
  at configure time: --with-log-hints
  at run time: DARSHAN_LOGHINTS environment variable
440
441
* bug fix contributed by Sandra Schröder: use case-insensitive search for MPI
  symbols in Fortran wrapper script
Philip Carns's avatar
Philip Carns committed
442
443
* performance bug fix: remove unecessary call to MPI_File_set_size when
  writing log
444
445
446
* added --with-logpath-by-env configure option to allow absolute 
  log path to be specified via environment variable

447
448
449
450
451
452
453
454
455
456
457
darshan-2.1.0
=============
* additinoal environment variables to control log, jobid and
  alignment parameters
* additional configure tests to improve portability
* bug fixes for darshan-parser --perf calucations
* support for MPI1.x
* support for OpenMPI
* support for PGI, Intel compilers
* new libdarshan.so dynamic library for use with LD_PRELOAD

458
459
460
461
462
463
464
465
466
467
468
469
470
darshan-2.0.2
=============
* added a random identifier to job logs (to avoid collisions from multiple
  application instances within a single scheduler job)
* improved installation and library path management for darshan-job-summary.pl
* improved error handling in darshan-job-summary.pl
* additional derived statistics categories for darshan-parser output:
    --all   : all sub-options are enabled
    --base  : darshan log field data [default]
    --file  : total file counts
    --perf  : derived perf data
    --total : aggregated darshan field data

471
472
darshan-2.0.1
=============
Philip Carns's avatar
Philip Carns committed
473
474
475
* bug fix to variance/minimum calculations on shared files
* switch to automatic generation of all MPI compiler scripts using
  darshan-gen-* tools
476
477
478
479
* new run time environment variable: DARSHAN_INTERNAL_TIMING.  If set at job
  execution time, it will cause Darshan to time its own internal data 
  aggregation routines and print the results to stdout at rank 0.

480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
darshan-2.0.0
=============
* new output file format that is portable across architectures
  NOTE: Darshan 1.x output files are incompatible with the tools in this 
  release unless they were generated on a ppc32 architecture (Blue Gene)
* 8 new counters that record the rank of the fastest and slowest process that
  opened each shared file, along with the number of seconds and number of
  bytes consumed by those processes.  It also reports the variance in both
  time and amount of data.
* new --with-jobid-env configure argument to support recording job identifiers
  from different schedulers
* job ID is now recorded within the Darshan log in addition to in the file
  name
* darshan-job-summary.pl:
  * opens output files directly without using intermediate darshan-parser output
  * table showing data usage per file system
Philip Carns's avatar
Philip Carns committed
496
  * table showing I/O variance in shared files
497
498
499
* Fixes for bugs reported by Noah Watkins: 
  * avoid name collision in hashing function
  * divide by zero error in darshan-job-summary.pl
500

501
502
503
504
darshan-1.1.14
==============
* fixed erroneous incompatibility warning when opening old logs in darshan-parser

505
506
507
508
darshan-1.1.13
==============
* updated compiler scripts to fix link order in some cases with -lhdf5

509
510
511
512
513
514
515
darshan-1.1.12
==============
* improved mapping of file records to mount points
* new page in darshan-job-summary.pl output showing timelines of file access
* bug fix to "fast" mpif90 script
* checkpoint/restart ability in parallel fsstats script

Philip Carns's avatar
Philip Carns committed
516
517
518
519
520
darshan-1.1.11
==============
* Bug fix for lseek, pread, and pwrite when used in 32 applications without large file support
* Improved experimental darshan-gen-cc.pl script
* Added new experimental darshan-gen-cxx.pl script
Philip Carns's avatar
Philip Carns committed
521

522
523
524
525
526
darshan-1.1.10
==============
* Bug fix for files that are accessed with stat() but never opened
* Workaround zlib problems with 64 bit offsets on 32 bit architectures

Philip Carns's avatar
Philip Carns committed
527
528
529
530
531
532
533
darshan-1.1.9
=============
* Added "fast" version of each BG/P compiler
* Added experimental scripts in test directory to run fsstats in parallel
* Kevin Harms: Added experimental utilities for loading darshan results into SQL
* Use exclusive flag when opening output file (to protect against file name collision)
* Rob Ross: updates to allow command line tools to build on Darwin
534
* Bug fix for pnetcdf configure problem reported by Rob Latham; darshan now always pulls in MPI_Wtime() symbol at link time
Philip Carns's avatar
Philip Carns committed
535

536
537
538
darshan-1.1.8
=============
* Added tracking of file system type and mount point for each file
Philip Carns's avatar
Philip Carns committed
539
540
541
* Added tracking of file size at open time (CP_SIZE_AT_OPEN)
* Moved sync cost to be counted in cumulative write time rather than cumulative metadata time
* Added sync as a separate category in darshan-job-summar.pl counters
542
543
544
545
546
547
* Bug fix to most frequent access size table in darshan-job-summary.pl
* Converted all utilities to use darshan-logutils api for reading output files
* Added backwards compatibility to darshan-logutils routines
* Kevin Harms: Added darshan-analyzer utility to summarize usage of MPI-IO, pNetCDF, HDF5, and shared files across a set of output files
* Fixed bug field listing for darshan-diff utility

548
549
550
551
darshan-1.1.7
=============
* Minor fix for a compile warning

552
553
554
555
darshan-1.1.6
=============
* Kevin Harms: bug fix for segfault in apps that use MPI_Init_thread()

556
557
558
559
560
darshan-1.1.5
=============
* Limit PMPI usage in library to fewer functions
* Update PMPI detection in compiler scripts to ignore functions unused by Darshan

Philip Carns's avatar
Philip Carns committed
561
562
563
564
565
566
567
568
569
570
darshan-1.1.4
=============
* Track files opened via Parallel NetCDF
* Track files opened via HDF5
* Record slowest individual POSIX read and write times along with access size for those operations
* Inspect symbols at compile time to determine whether to enable Darshan or not based on the presence of MPI and PMPI symbols
* Use GNU and IBM compilers from path rather than hard coded location
* Simplify warning message if unable to open log file
* Remove unused internal benchmark routines

Philip Carns's avatar
Philip Carns committed
571
572
573
574
darshan-1.1.3
=============
* Updated compiler scripts for V1R4 driver on BlueGene/P

575
576
577
578
darshan-1.1.2
=============
* Added *_r versions of each IBM compiler script on BlueGene/P

Philip Carns's avatar
Philip Carns committed
579
580
581
582
583
584
585
586
587
darshan-1.1.1
=============
* Set default permissions to 0400 (user read only) for output files
* Automatically disable Darshan at link time if common PMPI libraries are detected in the command line
* Experimental tool (darshan-gen-cc.pl) to automatically generate Darshan-enabled mpicc scripts

darshan-1.1.0
=============
* Initial public release