topic Re: processor E5-2620 supports RDRAND? in Mobile and Desktop Processors

processor E5-2620 supports RDRAND?

AKvas1 — Fri, 17 May 2013 17:59:19 GMT

Hello

I have a server platform Intel R1208GZ4GC and E5-2620 processors. I'm trying to use RDRAND, to generate random numbers. To put this code:

int _rdrand16_step(unsigned short *therand) {

unsigned char err;

asm volatile("rdrand %0 ; setc %1"

: "=r" (*therand), "=qm" (err));

return (int) err;

}

However, when compiling the error:

{standard input}: Assembler messages:

{standard input}:7191: Error: no such instruction: `rdrand %dx'

gmake: *** [../../main/main.o] Error 1

Operating system FreeBsd 8.3

Help me, please.

AKvas1 — Sun, 19 May 2013 18:39:46 GMT

As it turned out the processor E5-2620 does not support rdrand. Your redirection was in vain.

Silvia_L_Intel1 — Mon, 20 May 2013 16:04:25 GMT

RdRand is support by the Ivy Bridge or 3rd generation processors.

The E5-2620 is a http://ark.intel.com/products/codename/33170/Sandy-Bridge-EP Sandy Bridge-EP, a 2nd generation processor therefore it does not support RdRand.

However, you may want to contact the software manufacture to find out the minimum requirements needed in order to work.

regards.