[Nek5000-users] NEK gets stuck

[nek5000-users at lists.mcs.anl.gov]

Doesn't sound like a memory problem given 4GB of memory per core and a
total static data size of ~350MB (according to the output of size).
The size of the executable doesn't matter in this case.

- Can you post your logfile again (for the case where the SEMG was disabled).
- What's the lowest number of processors you can reproduce the problem
(try with lx1=4)

-Stefan

On 10/11/11, nek5000-users at lists.mcs.anl.gov
<nek5000-users at lists.mcs.anl.gov> wrote:
> Hi Stefan,
>
> Each node has 64 GB of RAM. There are 16 cores in each node. Each core has
> the 4096 KB of cache. The size of the executable 'nek5000' is 5.6 MB. I
> tried running with p43=1 and it still gets stuck. The full specifications of
> each core are given below:
>
> vendor_id       : GenuineIntel
> cpu family      : 6
> model           : 15
> model name      : Intel(R) Xeon(R) CPU           X7350  @ 2.93GHz
> stepping        : 11
> cpu MHz         : 2933.445
> cache size      : 4096 KB
> physical id     : 6
> siblings        : 4
> core id         : 3
> cpu cores       : 4
> fpu             : yes
> fpu_exception   : yes
> cpuid level     : 10
> wp              : yes
> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
> cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall lm
> constant_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr lahf_lm
> bogomips        : 5866.92
> clflush size    : 64
> cache_alignment : 64
> address sizes   : 40 bits physical, 48 bits virtual
>
> Thanks,
> Mani
>
>
> On Mon, Oct 10, 2011 at 11:56 PM, <nek5000-users at lists.mcs.anl.gov> wrote:
>
>> What's the memory size per core?
>>
>> Sure p43=0 is correct if you want to use the multilevel Schwarz
>> solver. Just as a cross check: set p43=1 and try again.
>>
>> On 10/10/11, nek5000-users at lists.mcs.anl.gov
>> <nek5000-users at lists.mcs.anl.gov> wrote:
>> > Hi Stefan,
>> >
>> > The following is the output of 'size nek5000'
>> >
>> >    text    data     bss     dec     hex filename
>> > 5163006   59896 333337824       338560726       142e06d6        nek5000
>> >
>> >
>> > In the .rea file, p43 has been set to 0.
>> >
>> > Mani
>> >
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>