Commit 00deaca6 authored by Philip Carns's avatar Philip Carns

recommend --enable-stat-at-open option for BG installation


git-svn-id: https://svn.mcs.anl.gov/repos/darshan/trunk@629 3b7491f3-a168-0410-bf4b-c445ed680a29
parent ac0c35a5
......@@ -196,13 +196,17 @@ The following example shows how to configure Darshan on a BG/P system:
./configure --with-mem-align=16 \
--with-log-path=/home/carns/working/darshan/releases/logs \
--prefix=/home/carns/working/darshan/install --with-jobid-env=COBALT_JOBID \
--with-zlib=/soft/apps/zlib-1.2.3/ \
--with-zlib=/soft/apps/zlib-1.2.3/ --enable-stat-at-open \
--host=powerpc-bgp-linux CC=/bgsys/drivers/ppcfloor/comm/default/bin/mpicc
----
.Rationale
[NOTE]
====
The --enable-stat-at-open time option is specified to allow Darshan to
collect additional information for newly opened files. The GPFS file system
typically deployed in conjunction with Blue Gene systems does not produce
significant additional overhead from the use of this option.
The memory alignment is set to 16 not because that is the proper alignment
for the BG/P CPU architecture, but because that is the optimal alignment for
the network transport used between compute nodes and I/O nodes in the
......
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