Newsgroups: comp.parallel.pvm
From: gero@thor.e-technik.tu-ilmenau.de (Gero Maeder)
Reply-To: Gero.Maeder@e-technik.tu-ilmenau.de
Subject: Re: Run Master1 Slave1
Organization: TU-Ilmenau
Date: 17 Jul 1995 06:04:01 GMT
Message-ID: <3ucugh$bgv@prakinf2.PrakInf.TU-Ilmenau.DE>

In article <3uave2$bpd@temasek.teleview.com.sg>, yingpeng@temasek.teleview.com.sg (Diana Chua) writes:
|> Hi,
|> 
|> I have just tried to run Master1 and Slave1 from the examples and 
|> encounter these problems when I entered greater than 32 for the number of 
|> slaves.  I have 2 HPPA in my virtual machine configuration.
|> 
|> Problem 1 :	Master1 seemed to spawn slaves endlessly when I entered 34.
|> Problem 2 :	Master1 seemed to hang.  Some slaves didn't return a message
|> 		to the master1.
|> 
|> When I used 'ps' in pvm console, I saw slaves running in both the HPPAs.
|> 
|> Has anyone seen these problems?  What could they be due to?
|> 
|> Maybe I will try to use pvm_trecv in place of pvm_recv to see whether 
|> problem 2 can be solved.
|> 
|> Thanks in advance.


Look into the source code, there the number of maxcpus is limited to 32
and so some structures.

struct pvmhostinfo *hostp[32];
if( nproc > 32 ) nproc = 32 ;

Hope this helps,

Gero
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