add docs for new Cray regression harnesses

darshan-test/regression/README.BG.ALCF.txt

@@ -12,7 +12,7 @@ To run regression tests:
   make install
 
   # darshan util
-  ../configure --prefix=/home/carns/working/darshan/install
+  ../configure --prefix=/home/carns/working/darshan/install-cetus
   make install
 
 - start a screen session by running "screen"

darshan-test/regression/README.CRAY.ALCF.txt

+See README.txt for general instructions.  This file contains notes for testing on the Cray platform @ the ALCF 
+(more specifically: theta.alcf.anl.gov).  This example assumes that you are using the Cray module
+method to add instrumentation.
+
+To run regression tests:
+
+- unload any existing darshan module in the environment and switch to gnu compilers
+  module unload darshan
+  module switch PrgEnv-intel PrgEnv-gnu
+
+- compile and install both darshan-runtime and darshan-util in the same directory
+  examples:
+
+  # darshan runtime
+  ../configure --with-mem-align=64 --with-log-path=/projects/SSSPPg/carns/darshan-logs --prefix=/home/carns/working/darshan/install-theta --with-jobid-env=COBALT_JOBID --disable-cuserid --host=x86_64 CC=cc
+  make install
+
+  # darshan util
+  ../configure --prefix=/home/carns/working/darshan/install-theta
+  make install
+
+- start a screen session by running "screen"
+  note: this is suggested because the tests may take a while to complete depending on scheduler 
+  availability
+
+- run regression tests
+  ./run-all.sh /home/carns/working/darshan/install-cetus /projects/SSSPPg/carns/darshan-test cray-module-alcf
+

darshan-test/regression/README.CRAY.NERSC.txt

+See README.txt for general instructions.  This file contains notes for testing on the Cray platform @ NERSC
+(more specifically: cori.nersc.gov).  This example assumes that you are using the Cray module
+method to add instrumentation.
+
+To run regression tests:
+
+- unload any existing darshan module in the environment and switch to gnu compilers
+  module unload darshan
+  module switch PrgEnv-intel PrgEnv-gnu
+
+- compile and install both darshan-runtime and darshan-util in the same directory
+  examples:
+
+  # darshan runtime
+  ../configure --with-mem-align=8 --with-log-path=/global/cscratch1/sd/ssnyder/darshan-logs --prefix=/global/homes/s/ssnyder/working/darshan/install-cori --with-jobid-env=SLURM_JOB_ID --disable-cuserid CC=cc
+  make install
+
+  # darshan util
+  ../configure --prefix=/global/homes/s/ssnyder/working/darshan/install-cori
+  make install
+
+- start a screen session by running "screen"
+  note: this is suggested because the tests may take a while to complete depending on scheduler 
+  availability
+
+- run regression tests
+  ./run-all.sh /global/homes/s/ssnyder/working/darshan/install-cori /global/cscratch1/sd/ssnyder/darshan-test cray-module-nersc
+