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Up Topic Rybka Support & Discussion / Rybka Discussion / Rybka 3 w32 running on a VM
- - By Patricio (***) Date 2008-08-09 04:02
Could anybody please estimate what % of slow down would suffer an application (and particularly a chess engine, a particularly R3) if it is run over a VMWare under Win XP 32 bits?

Best regards,

                            Patricio.
Parent - - By Arkansaw (***) Date 2008-08-09 04:19
A lot, I recommend that you do not try because VMWare itself will take up a lot cpu resource just for emulating the OS
Parent - - By brunjes (**) Date 2008-08-09 04:55
I disagree with this for the case of VMWare Workstation. I have run VMs for years now. If you run VMware Workstation, there is about 4-8% performance degradation for CPU-intensive applications. I/O is terrible though so anything that does lots of disk I/O will be much slower. Thankfully, chess engines do not do much disk I/O (tablebase accesses perhaps being an exception). If you run the free VMware server, performance definitely takes a significant hit. It's worth what you pay for it.  :-)

Virtualbox is free (Google it) and if you only need a single processor, it's much better than VMware server. If you already have VMware Workstation then that offers you multiple CPU support in the virtual machine.

Roy
Parent - By Patricio (***) Date 2008-08-09 14:56
When I said VM, I meant VMWare Workstation.

So the degradation is not huge.

Best regards,

                            Patricio.
Parent - By Vempele (Silver) Date 2008-08-09 08:27
Just nitpicking, but VMWare doesn't emulate the OS. It emulates the machine running the OS.
Up Topic Rybka Support & Discussion / Rybka Discussion / Rybka 3 w32 running on a VM

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