Firefly and PC GAMESS-related discussion club


 
Learn how to ask questions correctly  
 
 
We are NATO-free zone
 



Re^5: Firefly-8.0.1 is not using all the cores of processor...

Alex Granovsky
gran@classic.chem.msu.su


Dear Siddheshwar,

first, tell us what was the particular MPI implementation
with which Firefly version you are using was linked.
If you are not certain, enter the "Downloads" page and look
at the list of available Firefly binaries.

To know MPI implementation is very important because correct
actions depend on the version of MPI used to create Firefly.

Kind regards,
Alex Granovsky


On Fri Feb 21 '14 9:42am, Siddheshwar Chopra wrote
--------------------------------------------------
>Dear Sir,
>I am using verison 8.0.1. and was trying to run using mpirun -np 2, when error occured. So you want me try running it with openmpi?

>Regards,

>On Thu Feb 20 '14 7:38pm, Alex Granovsky wrote
>----------------------------------------------
>>Dear Siddheshwar,

>>what was the version of Firefly you was trying to run?
>>It seems to me it was linked with plain MPICH1, was it?
>>If you have openmpi, mpich2 and mpich-3.0.4 (i.e., mpich3)
>>you need to use version of Firefly linked with opmempi
>>or mpich2 correspondingly (at moment, mpich3 is not
>>supported). Alternatively you can use MPICH1 linked version
>>but you need to run it using procgrp file rather than mpirun.

>>Kind regards,
>>Alex Granovsky
>>
>>
>>On Thu Feb 20 '14 11:00am, Siddheshwar Chopra wrote
>>---------------------------------------------------
>>>Dear Sir,
>>>I am already using httfix option in the i/p file. I have openmpi, mpich2 and mpich-3.0.4 installed on my system. Any help would be welcome.

>>>Regards,
>>>
>>>
>>>On Thu Feb 20 '14 0:13am, Alex Granovsky wrote
>>>----------------------------------------------
>>>>Dear Siddheshwar,

>>>>I'm sorry for the delayed answer.

>>>>First, what is the MPI implementation that is installed onto your
>>>>computer (i.e. the MPI implementation you are using) and  what is
>>>>the MPI implementation the version of Firefly you are using was
>>>>linked with? It seems there can be MPI implementations mismatch
>>>>and this is why I'm asking about this. I.e. you may be trying to
>>>>run mpich-1 version using mpirun of MPICH2 etc...

>>>>Second, Intel's i3 processor has only 2 physical cores.
>>>>The addition two cores are due to hyper-threading. Normally,
>>>>Firefly uses only one process per physical core. This means
>>>>you should run it passing "-np 2" arguments to mpirun.
>>>>If you want to use all four logical cores it is still possible,
>>>>however you need to specify:

>>>>

  
 $smp httfix(1)=.f. $end

>>>>in the input file, then run Firefly using mpirun -np 4

>>>>Kind regards,
>>>>Alex Granovsky
>>>>
>>>>
>>>>
>>>>On Sat Feb 15 '14 10:47am, Siddheshwar Chopra wrote
>>>>---------------------------------------------------
>>>>>Dear Sir,
>>>>>I am running calculations on Linux mint-15, with i3 processor-2.2 GHz, 2GB RAM. I am running Firefly-8.0.1 as follows:
>>>>>mpirun -np 4 firefly801 -i /home/sid/Desktop/Fire/1.inp -o /home/sid/Desktop/Fire/1.log

>>>>>But I get the following error message and the system monitor also shows that ONLY 2 processors are being used.
>>>>>
>>>>>
>>>>>                           Running on host matrix                           Running on host matrix
>>>>>
>>>>>
>>>>> FATAL ERROR INITIALIZING FIREFLY! CHECK YOUR COMMAND LINE OPTIONS!
>>>>>x
>>>>>
>>>>>
>>>>> FATAL ERROR INITIALIZING FIREFLY! CHECK YOUR COMMAND LINE OPTIONS!
>>>>>
>>>>>
>>>>> ON MASTER NODE, ERROR CODE IS : 0x00010004 ON MASTER NODE, ERROR CODE IS : 0x00010004
>>>>>    Unable to create output file
>>>>>    Output file already exists!
>>>>>
>>>>>
>>>>>    Unable to create output file
>>>>>    Output file already exists!

>>>>>                           Running on host matrix
>>>>>
>>>>>
>>>>> FATAL ERROR INITIALIZING FIREFLY! CHECK YOUR COMMAND LINE OPTIONS!

>>>>> ON MASTER NODE, ERROR CODE IS : 0x00010004
>>>>>    Unable to create output file
>>>>>    Output file already exists!

>>>>>Please tell me what has to be done so that Firefly uses 4 processors/threads?
>>>>>
>>>>>
>>>>>Regards,


[ Previous ] [ Next ] [ Index ]           Wed Feb 26 '14 1:26am
[ Reply ] [ Edit ] [ Delete ]           This message read 499 times