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Old 2009-10-18, 18:08   #166
siew
 
Oct 2009

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do i need the msieve.exe 64 bit version?

there is onlt 1.38 compiled x64 version from
ggnfs-svn360-win32-p4

or i need to compile latest msieve by myself ?
tanx!
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Old 2009-10-18, 18:14   #167
siew
 
Oct 2009

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found the solution:

The Windows 2008 x32 Enterprise handle big memory blocks correctly, so no need to use x64 now:

Code:
commencing relation filtering
estimated available RAM is 3837.6 MB
commencing duplicate removal, pass 1
found 1667855 hash collisions in 14079145 relations
commencing duplicate removal, pass 2
found 1258655 duplicates and 12820490 unique relations
memory use: 49.3 MB
reading ideals above 720000
commencing singleton removal, initial pass
memory use: 689.0 MB
reading all ideals from disk
memory use: 439.8 MB
commencing in-memory singleton removal
begin with 12820490 relations and 24250275 unique ideals
reduce to 466 relations and 0 ideals in 5 passes
max relations containing the same ideal: 0
filtering wants 1000000 more relations
elapsed time 00:08:41
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Old 2009-10-18, 19:37   #168
jasonp
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Oct 2004

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The precompiled 32-bit windows binary is 'large-address aware', meaning that if you run windows in a mode that gives you 3GB of virtual memory in every process, then you can do larger factoring jobs before a 32-bit system runs out of VM for msieve. The danger there is that if you have less than 3GB of memory and a big enough factoring job, msieve will run but will swap to disk.

I don't know how to turn on 3GB mode for versions of windows more recent than win2k.

Last fiddled with by jasonp on 2009-10-18 at 19:37
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