[SCore-users] Myrinet deadlock
Bogdan Costescu
bogdan.costescu at iwr.uni-heidelberg.de
Thu Mar 6 18:58:30 JST 2003
On Thu, 6 Mar 2003 kameyama at 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 at IWR.Uni-Heidelberg.De
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