From: Neumann, Gregor (Gregor.Neumann_at_fujitsu-siemens.com)
Date: Tue Apr 24 2007 - 06:55:00 PDT
Mit freundlichen Gr�ssen, Gregor Neumann Systems Engineer Fujitsu-Siemens Computers GmbH Adresse: Domagkstr. 28 80807 M�nchen Telefon: 0049-89-3222-1558 Mobil: 0172-8483890 Fax: 0049-89-3222-3291558 mailto:[email protected] Internet: www.fujitsu-siemens.de Firmenangaben: www.fujitsu-siemens.de/imprint.html -----Original Message----- From: owner-checkpoint_at_lbl_dot_gov [mailto:owner-checkpoint_at_lbl_dot_gov] On Behalf Of Paul H_dot_ Hargrove Sent: Friday, April 20, 2007 2:50 AM To: checkpoint_at_lbl_dot_gov Cc: Thomas Zeiser Subject: Re: checkpointing processes with >2GB on x86_64 Paul H. Hargove wrote: > I've manually verified that I can checkpoint as large as a 2936MB > working set on a 32-bit x86 machine. > > With a 6GB working set on a 64-bit machine I see a file truncated at > (2^31-1) bytes (also on reiserfs). > > I will investigate the cause. > > -Paul [snip] Actually, the 32-bit checkpoints were no good either when > 2GB. I've traced the source of the problem to overflow in some 32bit counters in the page-writing code. The problem is now fixed in CVS, and will appear as 0.5.4, hopefully soon. -Paul -- Paul H. Hargrove PHHargrove_at_lbl_dot_gov Future Technologies Group HPC Research Department Tel: +1-510-495-2352 Lawrence Berkeley National Laboratory Fax: +1-510-486-6900