Can I use all Cores simulating with AVL?

kingoreo · August 30, 2013, 09:16

Hi everyone,

I just wondered, if it is possible to use all the cores of my computer, so that the simulation would proceed faster. If it is possible, could somebody tell me, if I can adjust these new settings directly in AVL or do I have to do this with the Windows-Settings-window

Best regards

kingoreo

kimmhw · September 1, 2013, 21:22

Hi,

How many cores do you have?
And you need to describe FIRE version and OS information.

Normally, MPI should speed up the calculation.
And HP-MPI library will be installed during FIRE installation.

When you click the "start calculation", "Job Setup" window will be popped up.
You can select "MPI" as simulation mode and define # of CPUs.

Very straightforward... Just try.

amin_u50 · September 8, 2013, 13:23

hi...
my sys is core i5...
How many CPUs can I use for fast running?
what host name is?
thnx

kimmhw · September 9, 2013, 02:42

I don't know how many cores do you have in your system.
It depends on number of CPU cores.

amin_u50 · September 9, 2013, 03:54

Hi kimwh...
my sys has 4 core...
what do you recommend for this CPUs?
thnx...
amin_u50

kimmhw · September 9, 2013, 04:58

In general, the use of detail chemistry results in long calculation time.
You can use all of cores for calculation.

And if you are using v2013, the option "clustering" or "multi-zone" for general gas phase reaction can be applied to reduce the calculation time.

amin_u50 · September 9, 2013, 07:30

Hi kimmhw
when i use more than one CPUs in job setup I face this error:
mpirun: gethostbyname(amin) failed
mpirun: Line 1: Invalid hostname: amin

I don't know what I enter in the HOST name...
what should I do?

thnx
amin_u50

August 30, 2013, 09:16	Can I use all Cores simulating with AVL?	#1
kingoreo New Member Dean Petrovski Join Date: Aug 2013 Posts: 2 Rep Power: 0	Hi everyone, I just wondered, if it is possible to use all the cores of my computer, so that the simulation would proceed faster. If it is possible, could somebody tell me, if I can adjust these new settings directly in AVL or do I have to do this with the Windows-Settings-window Best regards kingoreo

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September 1, 2013, 21:22		#2
kimmhw New Member Myunghwan Kim Join Date: Jul 2012 Posts: 29 Rep Power: 13	Hi, How many cores do you have? And you need to describe FIRE version and OS information. Normally, MPI should speed up the calculation. And HP-MPI library will be installed during FIRE installation. When you click the "start calculation", "Job Setup" window will be popped up. You can select "MPI" as simulation mode and define # of CPUs. Very straightforward... Just try.

September 8, 2013, 13:23		#3
amin_u50 Senior Member amin u3fi Join Date: Feb 2013 Posts: 137 Rep Power: 13	hi... my sys is core i5... How many CPUs can I use for fast running? what host name is? thnx

September 9, 2013, 02:42		#4
kimmhw New Member Myunghwan Kim Join Date: Jul 2012 Posts: 29 Rep Power: 13	I don't know how many cores do you have in your system. It depends on number of CPU cores.

September 9, 2013, 03:54		#5
amin_u50 Senior Member amin u3fi Join Date: Feb 2013 Posts: 137 Rep Power: 13	Hi kimwh... my sys has 4 core... what do you recommend for this CPUs? thnx... amin_u50

September 9, 2013, 04:58		#6
kimmhw New Member Myunghwan Kim Join Date: Jul 2012 Posts: 29 Rep Power: 13	In general, the use of detail chemistry results in long calculation time. You can use all of cores for calculation. And if you are using v2013, the option "clustering" or "multi-zone" for general gas phase reaction can be applied to reduce the calculation time.

September 9, 2013, 07:30		#7
amin_u50 Senior Member amin u3fi Join Date: Feb 2013 Posts: 137 Rep Power: 13	Hi kimmhw when i use more than one CPUs in job setup I face this error: mpirun: gethostbyname(amin) failed mpirun: Line 1: Invalid hostname: amin I don't know what I enter in the HOST name... what should I do? thnx amin_u50