I am a grean-hand，I have a question about msr：when i reboot the computer，will The MSR register reset？or not？，if i write some infomation to the msr register ，when the cpu reboot ，I need rewrite？
Can two avx instrcutions can be executed in parallel?
a1= _mm256_load_ps((Rin +offset));
a2= _mm256_load_ps((Gin +offset));
a3= _mm256_load_ps((Bin +offset));
ac0 = _mm256_mul_ps(a1, in2outAvx_11);
ac1 = _mm256_mul_ps(a2, in2outAvx_12);
ac2 = _mm256_mul_ps(a3, in2outAvx_13);
z0 = _mm256_add_ps(ac0,ac1);
z1 = _mm256_add_ps(z0, ac2);
My setup: Linux 3.13 kernel, gcc 4.8.2. Ubuntu on core i7
How to compile avx intrinsics in linux device driver? Any exact gcc compiler flags (makefile) and what header files to include in c source?
I have a problem trying to start my pintool built with WinSock library (ws2_32.lib) - it immediately exits with message "Failure to open DLL file WS2_32.dll".
I've prepared a simple pintool to illistrate the problem:
void *p = WSAStartup;
int main(int argc, char *argv)
if (PIN_Init(argc, argv)) return 1;
is there an opportunity to operate on pointers in 256 bit AVX2 registers (e.g. incrementing, border check, masking operations) and load from pointer, stored in a vector register?
Thank you in advance!
This is for Intel 64 and IA-32 Architectures Software Developer’s Manual, Order Number: 325462-053
US January 2015. Page Vol. 1 5-29.
5.19 64-BIT MODE INSTRUCTIONS
MOVZX (64-bits) Move doubleword to quadword, zero-extension
In fact 32 to 64 bit zero extension isn't supported as per Vol. 2A 3-583. It is only spec'd for r/m8 and r/m16.
There is a small chance that I'm misinterpreting that but then so is NASM which disallows this.
Somebody's wrong and so I'd like an official ruling.
I am interested in AVX instructions set using in my application for speed up.But i am new to AVX.
How can i know whether my system processor is able to support AVX or not?
My System Configurations as
OS; Windows 7 with 64-bit
CPU: Inter(R) Xeon(R) CPU W3505 @2.53GHz.
Anybody can help me..
Thanks in Advance.
I am trying to look at AVX 512 performance, currently, I wrote a simple function for evaluation as below, I configured the optimization and enabled AVX-512 etc in the project properties setting(vs2013 integrated with Intel-parallel-studio ), and I see the AVX-512 instructions are used from the asm files generated by compiler.
void complexVectorConjMpy(float *inputPtr1, float *inputPtr2, float *outputPtr, int numData)
float data1Re, data1Im, data2Re, data2Im;
I have intel xeon cpu E3-1230 v3 machine which has TSX.
I just want to test that TSX runs well.
From manual, i got this example pseucode