Re: [OMPI users] Short Long messages when synchronous

2006-08-29 Thread Marcelo Stival
OK, I really thank u ... ! How to verify the value for "first_fragment" param? I tried "ompi_info --param btl tcp", but I can't found this one. (openmpi 1.1.1b) One more "deep inside" question (next time, to the right list..:P) I suppose that the progress thread will be used just for rendezvous.

Re: [OMPI users] Short Long messages when synchronous

2006-08-29 Thread George Bosilca
Well, you post the question on the user mailing list. Therefore, I give you a user answer. If you want to know how do we implemented deep inside, then the answer is different. Short messages even on synchronous mode are sent using the rendez- vous protocol (sic). Except that our rendez-vous

Re: [OMPI users] Short Long messages when synchronous

2006-08-29 Thread Marcelo Stival
Thanks for your replay... Let me be a little insistent... :P I read (I don't remember where...) that an specific implementation could send messages with synchronous comm mode... eagerly! I think it still conform to the standard if the operation completes just after the ack from the receiver. Th

Re: [OMPI users] Short Long messages when synchronous

2006-08-29 Thread George Bosilca
On Tue, 29 Aug 2006, Marcelo Stival wrote: Hi, I have 2 questions related to short/long message protocols... 1) When using synchronous comm mode, short messages (<64kB) still be transferred eagerly? Depend. 64Kb is not the limits between the eager and rendez-vous protocol. In fact it depen