Acceleration
Solver  Start
Simulation Acceleration
Solver Start Simulation
Acceleration
Solver Start Simulation Acceleration
Solver
Start Simulation
Acceleration
Solver Start Simulation Acceleration
Solver
Start Simulation
Acceleration
This dialog box provides full control over the different
acceleration features used to increase the overall simulation performance.
CPU and GPU acceleration frame
Multithreading
(CPU) up to [ or Multithreading (CPU) ]: Check this field to take
advantage of the functionality of a multi-processor machine. The calculation
will be split into corresponding parts and will run parallel in different
threads to save simulation time.
You may insert the desired number of threads
in the provided field.
Please note: Some processors
announce more cores to the system than they actually have (virtual cores).
This feature is referred to as "Hyperthreading" for Intel processors.
Using these virtual cores for CST solver processes deteriorates the performance.
Therefore CST solvers will only use the physical processor cores but not
the virtual ones.
GPU acceleration up to: If this check button is enabled, GPU Computing is activated.
Please note, that this setting has only an effect if your computer is
equipped with GPU hardware supported by CST.
Please refer to the GPU
Computing page for further information.
Notice: In case of MPI
Computing or Distributed Computing the setting for the number of CPU cores
and for the number of GPUs is
meant per MPI node or per DC Solver Server, respectively.
Distributed Computing (DC) frame
Parameter
sweep / Optimization up to: Activate this check button to use the Distributed Computing for parameter sweeps and optimizer runs to perform simulation
runs with different parameter sets in parallel on the available DC Solver
Servers.
Distribute excitation calculation up to: (Not available
for all solvers) Activate this
check button to enable the Distributed Computing (DC)
facility. This offers the possibility to distribute solver runs
for different ports of a multi excitation calculation
to different DC Solver Servers and solve them
in parallel.
Distribute frequency calculation
up to: (Not
available for all solvers) Activate this
check box to distribute several frequency samples on different DC Solver
Servers ("Distribute frequency samples") to speed up the S-parameter
calculation. The distribution of frequency samples is only available for
the general purpose solver. See the Frequency Domain Solver Overview
for details about the distribution of frequency samples. All
fixed frequency samples, such as monitor frequencies, equidistant and
single frequency samples can be submitted to the DC job queue at once.
However, if the automatic frequency sampling is active, the number next
to "Distribute frequency samples" specifies how many jobs may
be submitted at once to the job queue. Increase this number to use more
DC Solver Servers in parallel for automatic frequency
sampling. Please note that it does not affect equidistant frequency samples,
monitor frequencies and other fixed frequencies, which are submitted to
the job queue at once.
Remote
calculation: (Not
available for all solvers) Activate this
check box to run a simulation remotely on a DC Solver Server.
DC
matrix calculation: (Not
available for all solvers) This check button controls
whether the matrix calculation is done remotely or on the machine where
the frontend is running. In any case the computation is only performed
once before the transient solver is started.
DC Properties...: Use this button to edit the current settings for the Distributed
Computing
Use
only servers with more than x GB memory: Enable
this check box to specify a lower limit for the required memory of the
distributed jobs. The specified DC Main Controller will use this value
to select appropriate DC Solver Servers where the requested amount of
memory is currently available. Please note that the available memory is
checked in intervals. This means that when the job is send to the DC Solver
Server the available memory might differ from the one which is shown in
the DC Main Controller's
Connected Clients tab.
MPI
Computing frame
MPI
Computing on ... nodes: (Not available for all solvers) Activating this check button allows the solver to run one
large simulation in parallel on a homogeneous cluster of machines using
MPI (Message Passing Interface) communication. You can select the cluster machines and all corresponding MPI settings in the
MPI
Cluster dialog box by pressing the MPI Properties button.
Please
find more detailed information about MPI Computing
on the MPI
Simulation Overview page.
Token usage frame
Required tokens
for this simulation shows the number of acceleration tokens needed
to perform the simulation with the settings made in the other sections
of this dialog box. This number is automatically updated when changing
the above acceleration settings.
Tokens currently
available displays the number of currently available acceleration
tokens. The total number of acceleration tokens in the license is shown
in brackets.
See also
Solver
Overview, GPU Computing, Distributed
Computing, MPI
Simulation Overview, Optimizer, Parameter
Sweep
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