parallel running issue in ansys 14 fluent

ade4921 · March 5, 2014, 02:05

hello,

i am trying to run ansys 14 fluent in parallel mode on one PC only. following is the problem:

-when i click on the parallel option, i define no processors as 4.
-fluent starts running and then gives the following message:
"Unable to open HKEY_LOCAL_MACHINE\SOFTWARE\Intel\MPI\SMPD\process \4600 registry key, error 5, access is denied"

-can someone please help me what does this mean and how should i solve it?

Thanks

ghost82 · March 5, 2014, 06:18

Try to start fluent with admin priviledges: right click on icon fluent and click on "run as admin" and see if the error goes away.

Daniele

ade4921 · March 6, 2014, 03:40

tried it and it worked.
but another issue has come up.
the simulation that i am trying to run in parallel is taking far too much time, in fact its still running while i write this. whereas the same simulation converged in half an hour in serial mode. can there be a reason that iam not looking at?

thanks again

neprendo · March 6, 2014, 06:35

It could in theory have something to do with the amount of available memory on your computer. If you run out of RAM the processes start to run on the harddrive which would much slower.

March 5, 2014, 02:05	parallel running issue in ansys 14 fluent	#1
ade4921 New Member adnan aziz Join Date: Oct 2013 Posts: 5 Rep Power: 13	hello, i am trying to run ansys 14 fluent in parallel mode on one PC only. following is the problem: -when i click on the parallel option, i define no processors as 4. -fluent starts running and then gives the following message: "Unable to open HKEY_LOCAL_MACHINE\SOFTWARE\Intel\MPI\SMPD\process \4600 registry key, error 5, access is denied" -can someone please help me what does this mean and how should i solve it? Thanks

March 6, 2014, 03:40	Thanks bro	#3
ade4921 New Member adnan aziz Join Date: Oct 2013 Posts: 5 Rep Power: 13	tried it and it worked. but another issue has come up. the simulation that i am trying to run in parallel is taking far too much time, in fact its still running while i write this. whereas the same simulation converged in half an hour in serial mode. can there be a reason that iam not looking at? thanks again

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March 5, 2014, 06:18		#2
ghost82 Senior Member Rick Join Date: Oct 2010 Posts: 1,016 Rep Power: 27	Try to start fluent with admin priviledges: right click on icon fluent and click on "run as admin" and see if the error goes away. Daniele

March 6, 2014, 06:35		#4
neprendo New Member Nick Prendergast Join Date: Dec 2013 Posts: 28 Rep Power: 13	It could in theory have something to do with the amount of available memory on your computer. If you run out of RAM the processes start to run on the harddrive which would much slower.