[MPICH2-dev] MPICH2 1.0.6rc1 thread support

[James S Perrin]

Hi,

	We want to use ssm as we sometimes have two specific processes per 
machine that working as a team.


	Actaully I think we have been using assuming serialized support at 
compile time (we're not doing runtime checking of threads_provided, long 
story don't ask) and it seems to have been working, we hadn't explicitly 
enabled threading in mpich2 so I gues we've been "lucky" :) Our 
Master/Slaves app has a threaded Master process that performs serialized 
MPI calls in two threads.



Regards
James

Rajeev Thakur wrote:
> Actually serialized and multiple thread levels are supported for sock and
> nemesis. I have updated the README. For other channels such as ssm, which
> have no thread support, we currently allow single and funneled. Do you need
> to use serialized with ssm?
> 
> Rajeev
>  
> 
>> -----Original Message-----
>> From: owner-mpich2-dev at mcs.anl.gov 
>> [mailto:owner-mpich2-dev at mcs.anl.gov] On Behalf Of James S Perrin
>> Sent: Friday, August 17, 2007 9:55 AM
>> To: mpich2-dev at mcs.anl.gov
>> Subject: [MPICH2-dev] MPICH2 1.0.6rc1 thread support
>>
>> Hi,
>> 	The README states that and serialized and multiple 
>> thread levels are 
>> only support by the sock channel, but I can configure the ssm 
>> channel to 
>> use serialized i.e.:
>>
>> --with-device=ch3:ssm --enable-threads=serialized
>>
>> where
>>
>> --with-device=ch3:ssm --enable-threads=multiple
>>
>> reports a configure error as expected. Is configure correct 
>> or the README?
>>
>> BTW some sort of feature matrix for the various devices and channels 
>> would be very helpful.
>>
>> Regards
>> James
>> -- 
>> --------------------------------------------------------------
>> ----------
>> James S. Perrin,                  | email: 
>> james.perrin at manchester.ac.uk
>> Research Computing Services,      | web:   www.mc.manchester.ac.uk
>> Kilburn Building, The University, | tel:   +44 161 275 6945
>> Manchester, England. M13 9PL.     | fax:   +44 161 275 0637
>> --------------------------------------------------------------
>> ----------
>> "The test of intellect is the refusal to belabour the obvious"
>> - Alfred Bester
>> --------------------------------------------------------------
>> ----------
>>
>>
> 


-- 
------------------------------------------------------------------------
James S. Perrin,                  | email: james.perrin at manchester.ac.uk
Research Computing Services,      | web:   www.mc.manchester.ac.uk
Kilburn Building, The University, | tel:   +44 161 275 6945
Manchester, England. M13 9PL.     | fax:   +44 161 275 0637
------------------------------------------------------------------------
"The test of intellect is the refusal to belabour the obvious"
- Alfred Bester
------------------------------------------------------------------------