[SCore-users-jp] Re: [SCore-users] Myrinet deadlock

[Bogdan Costescu]

On Thu, 6 Mar 2003 kameyama ＠ pccluster.org wrote:

> Please check whether IRQ is duplicated nor not.

I did go through the FAQ... The interrupts are not shared; as I have only 
a few devices in the computer (one IDE disk, one 3c905C, one Myrinet 
card), each has its own interrupt:

           CPU0       CPU1       
  0:    3202112    3042292    IO-APIC-edge  timer
  1:          2          1    IO-APIC-edge  keyboard
  2:          0          0          XT-PIC  cascade
  5:    1264609    1260821   IO-APIC-level  eth0
  8:          0          1    IO-APIC-edge  rtc
 11:          0          0   IO-APIC-level  usb-ohci
 12:     211923     162138   IO-APIC-level  myri
 14:      11142       8059    IO-APIC-edge  ide0

For non-SMP kernels, they are also not shared.

I'll try next to see if I can get GM to work with the same kernel (RH 
2.4.18-24) and if I can get some bad behaviour as well - although given 
different MPI implementation I guess that the communication needs (rate of 
interrupts, PCI bus usage, etc.) will be different.

-- 
Bogdan Costescu

IWR - Interdisziplinaeres Zentrum fuer Wissenschaftliches Rechnen
Universitaet Heidelberg, INF 368, D-69120 Heidelberg, GERMANY
Telephone: +49 6221 54 8869, Telefax: +49 6221 54 8868
E-mail: Bogdan.Costescu ＠ IWR.Uni-Heidelberg.De

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