topic Hello, in Intel® Integrated Performance Primitives

ippsSet_32fc throws memory error on "l9" CPUs

thomtek — Fri, 14 Nov 2014 02:08:05 GMT

Using IPP 8.0.1 on Core i7-4500U and -4600U CPUs (using "l9" IPP) , the ippsSet_32fc() function throws a memory access fault in the following code. Application built with VS2010. It does not happen with i7-2600 processor ("e9" IPP).

void bugTest_ippsSet_32fc()
{
    Ipp32fc val;
    val.re = val.im = 0.0f;

    int bufflen = 2097152; //L
    Ipp32fc* buf = ippsMalloc_32fc(bufflen);
    int offset = 446157; //M
    int setlen = bufflen - (offset+624176-1); //L-(M+N-1)

    ippsSet_32fc(val, buf+offset, setlen);   // Memory fault thrown in this function

ippsFree(buf);
}

CPU feature value is 0x0000efff for the CPUs that have the error. IPP version info:

IPP : Name:ippCore Ver:8.0.1 (r40318) Build:8.0.1.40318
IPPs : Name:ippSP AVX2 (l9) Ver:8.0.1 (r40318) Build:8.0.1.40318

Hello,

Chao_Y_Intel — Fri, 14 Nov 2014 06:36:17 GMT

Hello,

Could you have a check on the latest IPP 8.2 release? I recalled it has old issues, which is already fixed now.

Thanks,
Chao

The problem appears to be

thomtek — Mon, 17 Nov 2014 21:53:34 GMT

The problem appears to be fixed in 8.2.

It would be really helpful to have a "fixed problem" log for each release so we could more simply find things like this rather than having to hunt down and debug issues that are already known and fixed.

Tom