Scorpio 2.7 Linux

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stevenaaus
Posts: 613
Joined: Wed Oct 13, 2010 9:44 am
Location: Australia

Re: Scorpio 2.7 Linux

Post by stevenaaus »

I can't fault JA's 32 bit binary.

I've used Scorpio before, did 20 quick games just now with Scid vs. PC , and a half hour of xboard playing itself (below) and have never seen/recalled a crash.

"xboard -smpCores 2 -defaultHashSize 256 -mg 400 -tc 1:0 -inc 0 -mps -1 -ponder -zp -xexit -fcp /usr/share/scid/engines/scorpio/scorpio /share/scid/engines/scorpio -scp /usr/share/scid/engines/scorpio/scorpio -sd /usr/share/scid/engines/scorpio -lgi -2"

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
23390 root 20 0 224m 85m 0 R 100 4.2 28:02.90 scorpio
23392 root 20 0 224m 85m 0 R 100 4.2 27:57.37 scorpio

Xboard does reuse the one scorpio process (while ScidvsPC's tournament creates&destroys new engine processes for each game) but examining "top", Scorpio's memory usage seems stable while in xboard.

What does your "uname -a" give. One long shot is - I believe some recent kernels with SMP and PAE (Physical Address Extension) have bugs. Ubuntu's not exactly renown for stability either. :D
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stevenaaus
Posts: 613
Joined: Wed Oct 13, 2010 9:44 am
Location: Australia

Re: Scorpio 2.7 Linux

Post by stevenaaus »

Hang on. :twisted:

I tried it on short time controls against arasanx (and then itself again) and scorpio died at the end of the first game. This happended twice in a row, and the third tournament it only went for two games.

xboard -smpCores 2 -defaultHashSize 256 -mg 400 -tc 0:10 -inc 0 -mps -1 -ponder -zp -xexit -fcp /usr/share/scid/engines/scorpio/scorpio -fd /usr/share/scid/engines/scorpio -scp /usr/share/scid/engines/scorpio/scorpio -sd /usr/share/scid/engines/scorpio -lgi -2

Shame i can't build my own 32 bit binary (gives CC errors) to get a backtrace. JA's is stripped.

On Scid vs. PC at 10 secs + 0 inc, it played 8 games fine though.

(at 0:10 + 0, Arasanx 13.1 lost 8 game on time at exactly move 25!)
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jdart
Posts: 4429
Joined: Fri Mar 10, 2006 5:23 am
Location: http://www.arasanchess.org

Re: Scorpio 2.7 Linux

Post by jdart »

stevenaaus wrote: (at 0:10 + 0, Arasanx 13.1 lost 8 game on time at exactly move 25!)
Arasan is not tuned for super-short time controls.

Re which Linux, I have a couple different systems. The most recent one is
Linux panda 2.6.38-11-generic #50-Ubuntu SMP Mon Sep 12 21:17:25 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux


--Jon
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