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ior hintfile is too sensitive to whitespace #16

roblatham00 opened this Issue · 0 comments

1 participant


consider an Ior hintfile with the line
IOR_HINT__MPI__cb_buffer_size = 1234

The spaces around '=' mean IOR tries to set the hint "cb_buffer_size ". It's easy to miss the extra space in the -H output, and you go crazy wondering why MPI is ignoring this hint.

Please apply the attached patch to make hintfile parsing not care so much about whitespace:

From e3475ee6e0b367d3f5fb7a43106a31e8d999f055 Mon Sep 17 00:00:00 2001
From: Rob Latham <>
Date: Thu, 19 Dec 2013 13:01:35 -0600
Subject: [PATCH] more tolerant of whitepace in hintfile

If a hintfile contains e.g. cb_buffer_size = 1234, IOR will try to set
the hint "cb_buffer_size " (note trailing space), a hint that no MPI
implementation actually supports.
 src/utilities.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/utilities.c b/src/utilities.c
index 61b4f851..ce653611 100644
--- a/src/utilities.c
+++ b/src/utilities.c
@@ -162,8 +162,8 @@ void ExtractHint(char *settingVal, char *valueVal, char *hintString)
         char *settingPtr, *valuePtr, *tmpPtr1, *tmpPtr2;

-        settingPtr = (char *)strtok(hintString, "=");
-        valuePtr = (char *)strtok(NULL, " \t\r\n");
+        settingPtr = (char *)strtok(hintString, " =");
+        valuePtr = (char *)strtok(NULL, " =\t\r\n");
         tmpPtr1 = settingPtr;
         tmpPtr2 = (char *)strstr(settingPtr, "IOR_HINT__MPI__");
         if (tmpPtr1 == tmpPtr2) {
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