Mersenne: Primenet software under Win95 and OS/2

1998-10-29 Thread Richard G. Larson

I've been running Mersenne computations on various machines for a longish time.

This summer I switched from the manual method to the Primenet server.  All
under OS/2.  I'm currently using:

Thu 10-29-1998 13:32
[D:\MERSENNE]primeos2 -v
Mersenne Prime Test Program, Version 16.3.2
OS/2 - EMX version 3.1

Just recently I decided (in order to have a compuational environment on my
machine that is the same as my students at UIC are using) to install Boot
Manager with OS/2 Warp 4 and Windows 95 on one of my machines.  I had the bright
idea:   install the mersenne stuff in one directory on a drive shared by OS/2
and Win95 (taking advantage of the differently named executables: PRIMEOS2.EXE
and PRIME95.EXE) and autostart the appropriate one from each operating system,
with them sharing the Pxxx, Qxxx etc files  When I tried it, Win95
picked up the computation that OS/2 was doing when I booted it, but when I went
back to OS/2, the partial computations were lost.  The results.txt file is:

[Thu Oct 22 10:35:42 1998]
Self-test 320 passed!
[Thu Oct 29 12:37:02 1998]
Error reading intermediate file: p6258701
Renaming intermediate file q6258701 to p6258701.
Error reading intermediate file: p6258701

(Being a strong believer in Murphy's Law, I had made a backup of the directory
before I tried this, so all was not lost.)

The FAQ says that the Windows and linux versions are compatible, and I
understood that the OS/2 version a re-compilation of the linux version.  (I'm
using the version

Thu 10-29-1998 14:47
[D:\MERSENNE]primeos2 -v
Mersenne Prime Test Program, Version 16.3.2
OS/2 - EMX version 3.1

of the OS/2 version; I don't have the exact version of the Windows version
(it's too much trouble to re-boot Windowss at the moment) but it was downloaded
on10/14/98)

Suggestions?




-
Richard G. Larson,  Professor,   Dept of Math., Stat., and Comp. Sci.
U. of Ill. at Chicago,  851 S. Morgan St, M/C 249,  Chicago IL 60607-7045
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(312) 996-8616   email: [EMAIL PROTECTED]homepage: http://www.uic.edu/~rgl/
PGP key fingerprint: FA 6A 8D 21 41 0D 33 E9  E4 5F 46 83 50 C1 34 09



Re: Mersenne: Primenet software under Win95 and OS/2

1998-10-29 Thread George Woltman

Hi,

At 02:52 PM 10/29/98 CST, Richard G. Larson wrote:
install the mersenne stuff in one directory on a drive shared by OS/2
and Win95 with them sharing the Pxxx, Qxxx etc files 
When I tried it, Win95
picked up the computation that OS/2 was doing when I booted it, but when I
went
back to OS/2, the partial computations were lost.  The results.txt file is:

Win95 is running version 17 which can read a version 16 save file.
Unfortunately, version 16 OS/2 cannot read the version 17 save file.

If you'd like, I can email a version 16 win95 program to you.

Regards,
George