Why Cadence simulations are so slow under Linux?

[shadoweek]

too too slow

hi,
my problem with linux is related to Cadence.... the simulations are too too slow...though i don't have anything installed on linux except for Cadence... i have 896 Mbytes of RAM ..... and my processor is P4 2.8 GHz.... my swap drive is 2 Gbytes.... so, i think everything is quite right !!

so, any help??

by the way, i mean that it is too slow even for light simulations...

 

[eng_Semi]

Re: too too slow

what is ur simualtion and how much time does it takes ?

 

[chiguoquan]

Re: too too slow

If your hardisk is a IDE one,then you can open the DMA mode using hdparm .It can speed up your computer greately.For more details ,you can reference
https://wiki.debian.org/?LinuxSpeedup

 

[MSSN]

Re: too too slow

could u tell us exactly what the DMA mode does to speed up the simulation,thanks

 

[gliss]

too too slow

DMA mode is Direct Memory Access. It allows for faster data transfer speeds between the IDE hard disk controller and main system memory. Turning this feature on may speed up the simulation of there is a lot of disk access.
The best solution I found to slow disk subsystems is to use SCSI disks.

 

[lcking]

Re: too too slow

I alse suffer the speed problem.

Are you sure your network card is already working well?

 

[louisnells]

Re: too too slow

Try to check your kernel. If you are using a binary version provided by the installation suit, try to compile a fresh one.

In RedHat clones compiling fresh optimized kernel used to speed up the systems. Slower disk access may be also one of the problems. If you have a drive works with something below UDMA 33 try to enhance it.

 

[UniqueICs]

Re: too too slow

May be just try to use another simulation programs? For example, **broken link removed** under Linux works very fast and accurately.