[MITgcm-support] MITgcm on cluters!
Van Thinh Nguyen
vtnguyen at moisie2.math.uwaterloo.ca
Thu Apr 5 13:43:52 EDT 2007
Hi Matt,
Thanks a lot for your hint, with the option usesinglecpuio=true it's
really helpful.
Vth
--------------------------------------------------------
On Fri, 30 Mar 2007, Matthew Mazloff wrote:
> There are many reasons why it may be slower...many...and there are many ways
> to speed it up....so it is hard to say...for starters, what is your tile
> size?
>
> have you tried setting usesinglecpuio = true; this can be very beneficial
> when one is using 64 cpus.
>
>
> On Mar 30, 2007, at 12:48 AM, Van Thinh Nguyen wrote:
>
>> Hi,
>>
>> I tried to run MITgcm on a cluster, I used 64 cpus. Unfortunately, in
>> comparion with the same run on share memory (SMP) (used on 32 cpus), it
>> shows the code runs very slowly on cluster. Does anyone know an idea to
>> speedup the run on a cluster.
>>
>> Thanks,
>>
>> Van Thinh
>>
>> -------------------------------------------------
>>
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