From 00deaca6e1da0afa7a02db2623a5879af578aaa0 Mon Sep 17 00:00:00 2001 From: carns Date: Tue, 20 Nov 2012 16:23:46 +0000 Subject: [PATCH] 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 --- darshan-runtime/doc/darshan-runtime.txt | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/darshan-runtime/doc/darshan-runtime.txt b/darshan-runtime/doc/darshan-runtime.txt index 7c40c51..80627b9 100644 --- a/darshan-runtime/doc/darshan-runtime.txt +++ b/darshan-runtime/doc/darshan-runtime.txt @@ -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 -- 2.26.2