On Sun, Mar 04, 2007 at 03:23:30PM +0100, Julian Martin Kunkel wrote:
> I found some unexpected behavior in the distribution behavior if I
> set in MPI-programs the MPI hint striping_unit to (whatever) value.
Thanks for the bug report. This one was rather gross. I've attached a patch
to fix it.
Turns out when you pass a pointer-to-int instead of a pointer-to-int64
to a function that takes a void*, you get garbled data and a strp size
of 584382286904951784 bytes. that's 0x81c2498000003e8, and 0x3e8 ==
1000 (8 bytes of real data and 8 bytes of random memory).
Sam's come up with a proposal to make this sort of bug harder to
trigger. We can discuss that in a separate thread.
==rob
--
Rob Latham
Mathematics and Computer Science Division A215 0178 EA2D B059 8CDF
Argonne National Lab, IL USA B29D F333 664A 4280 315B
---------------------
PatchSet 1159
Date: 2007/03/07 06:14:31
Author: robl
Branch: HEAD
Tag: (none)
Log:
pass the proper type to PVFS_sys_dist_setparam
Members:
adio/ad_pvfs2/ad_pvfs2_open.c:1.29->1.30
Index: romio/adio/ad_pvfs2/ad_pvfs2_open.c
diff -u romio/adio/ad_pvfs2/ad_pvfs2_open.c:1.29
romio/adio/ad_pvfs2/ad_pvfs2_open.c:1.30
--- romio/adio/ad_pvfs2/ad_pvfs2_open.c:1.29 Wed Oct 18 08:06:50 2006
+++ romio/adio/ad_pvfs2/ad_pvfs2_open.c Wed Mar 7 12:14:31 2007
@@ -30,7 +30,7 @@
* handle to everyone else in the communicator
*/
static void fake_an_open(PVFS_fs_id fs_id, char *pvfs_name, int access_mode,
- int nr_datafiles, int strip_size,
+ int nr_datafiles, PVFS_size strip_size,
ADIOI_PVFS2_fs *pvfs2_fs,
open_status *o_status)
{
_______________________________________________
Pvfs2-developers mailing list
[email protected]
http://www.beowulf-underground.org/mailman/listinfo/pvfs2-developers
