[GE users] how to checkpoint cadence simulator spectre

Jan Sundermeyer jan.sundermeyer at iis.fraunhofer.de
Mon Nov 5 15:27:56 GMT 2007


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Hello,

we have recently installed SGE and we want to use with cadence spectre
simulation.
Right now i try to set up check pointing for the simulator.

Theoretically this should be quite simple:

spectre writes a checkpoint on the reception of SIGUSR2 and terminates
itself.
If it is rerun with the option "+recover" and a checkpoint file is
present it continues to simulate from that saved point.

However i have failed to get it to work with sge6.1u2.

1) checkpoint via the transparent mode does not work.
If i want to let generate a checkpoint on suspend, the process gets killed.
If i let it checkpoint on reschedule, no checkpoint is written but it
tries to jump over the first simulation steps on rerun, a rather
unexpected behaviour,
2) checkpoint via application level mode does not work (at least if i
want to checkpoint on suspend) as the process gets suspended first
before it can receive SIGUSR2, thus no checkpoint is written

Objective for all that fuss is to migrate jobs from slow machines on
fast machines when they become available.

So what am i missing ?

Thanks,
  Jan
-- 

******************************************************************************

Jan Sundermeyer

Fraunhofer-Institut für Integrierte Schaltungen
Projektgruppe Optische Kommunikationstechnik
Am Wolfsmantel 33
D-91058 Erlangen
Germany

phone (49) 9131/776-9214     Fax.: -499     e-mail:
Jan.Sundermeyer at iis.fraunhofer.de

Signierungszertifikat: http://pki.fraunhofer.de

http://www.iis.fhg.de/asic

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