Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!
NX 8.5 64 bit not utilizing the CPU while doing FEA
- Thread starter magnusrm
- Start date
- Thread starter
- #3
Hi, and thanks for your reply.
Ive read through the thread, and tried to use the nastran64L.exe as solver executable, but still only 15%ish CPU usage when doing topology optimization.
This might be a bit off-topic, but when i do topo-opt, NX says that element iterative solver (EIS) is not recommended. However, EIS solves the standard FEA much faster.
As you might understand, I am not very familiar with how NX uses resources. I know that Simulia Abaqus CAE has an option where you could specify how many cores you want to use and I was hoping for a similar option in NX.
Ive read through the thread, and tried to use the nastran64L.exe as solver executable, but still only 15%ish CPU usage when doing topology optimization.
This might be a bit off-topic, but when i do topo-opt, NX says that element iterative solver (EIS) is not recommended. However, EIS solves the standard FEA much faster.
As you might understand, I am not very familiar with how NX uses resources. I know that Simulia Abaqus CAE has an option where you could specify how many cores you want to use and I was hoping for a similar option in NX.
BlasMolero
Mechanical
Dear Magnusrm,
Click in the study name and select command "EDIT SOLVER PARAMETERS", and under NX NASTRAN Command keywords write PARALLEL=8, this will tell to NX NASTRAN solver to use the 8 cores of your CPU (if multithreading is disable use PARALLEL=4).
If you want to have permanently issued this command whern creating any study, simply go to to "FILE > UTILITIES > CUSTOMER DEFAULTS > SIMULATION > NASTRAN" and in SOLVER PARAMETERS > ADDITIONAL KEYWORDS enter PARALLEL=8, and you are done, OK?.
Best regards,
Blas.
~~~~~~~~~~~~~~~~~~~~~~
Blas Molero Hidalgo
Ingeniero Industrial
Director
IBERISA
48011 BILBAO (SPAIN)
WEB: Blog de FEMAP & NX Nastran:
Click in the study name and select command "EDIT SOLVER PARAMETERS", and under NX NASTRAN Command keywords write PARALLEL=8, this will tell to NX NASTRAN solver to use the 8 cores of your CPU (if multithreading is disable use PARALLEL=4).
If you want to have permanently issued this command whern creating any study, simply go to to "FILE > UTILITIES > CUSTOMER DEFAULTS > SIMULATION > NASTRAN" and in SOLVER PARAMETERS > ADDITIONAL KEYWORDS enter PARALLEL=8, and you are done, OK?.
Best regards,
Blas.
~~~~~~~~~~~~~~~~~~~~~~
Blas Molero Hidalgo
Ingeniero Industrial
Director
IBERISA
48011 BILBAO (SPAIN)
WEB: Blog de FEMAP & NX Nastran:
- Thread starter
- #5
- Status
Similar threads
