03-04-2008 02:50 PM
03-05-2008 07:56 AM
03-05-2008 10:17 AM
03-05-2008 11:22 AM - edited 03-05-2008 11:36 AM
06-20-2008 04:36 AM
We want to buy a workstation for ISE simulations. Can multiple core (dual or quadro) or multiple processors provide faster solution? We are considering a workstation with 2 quad-core Xeon processors and a 64 GB 800 MHz RAM. This makes a total of 8 processor cores with roughly 8 GB of RAM for each processor core in average. How would the performance of this system compare with a single core processor system with 8 GB of RAM? The performance metric that I am mostly interested in is the time that it takes to complete the full implementation cycle for a single design. How much of an improvement can I expect to see from the workstation? I am using ISE 9.2. Does this program support multi-threaded execution that favors a parallel processing environment?
I am using the Modelsim simulator for the post place &route simulations, can I also expect to see similar improvements in the simulation time?
03-10-2009 05:07 AM
I have a very important question regarding multiprocessor machines.
I'm trying to run multiple P&R processes concurrently on an IBM server with 4 dual core processors, 32GB of RAM, running Red Hat 4.
For some reason, unclear to me, only one P&R can run at a normal speed.
When I run more than one process of P&R the server dies. It literally chokes the server so that nothing runs.
It seems as if the scheduler goes crazy giving processes like top 100% CPU.
The same thing happens when MAP runs or XST, whenever I run multiple processes.
I tried using affinity on the processes and the specific process is set to the correct processor but the server still dies when more than one is running.
The server is running Red Hat 4 with a Linux 2.6.9 kernel, and the ISE tools are 9.2.04
Did you encounter any problem like this? Do you have any thought about what the problem can be?
I'd appreciate very much anyone's help. I'm extremely bewildered with this.... :-S