{
  "ticketNumber" : "677296",
  "reporterName" : "user4643736",
  "rankPoints" : "920",
  "resolutionStatus" : "",
  "ticketName" : "Linux/TDA2: TDA2H and TDA3x ：DSP benchmarks",
  "rankName" : "Intellectual",
  "replies" : "",
  "views" : "",
  "queryText" : "Part Number: TDA2 Tool/software: Linux Dear TI experts， When i run below test code on dsp，i found out the TDA3x's DSP is more efficient. Test Code: #define TSC_getDelay(preTSC) ((unsigned int)((0xFFFFFFFFl+TSCL)-(unsigned long long)preTSC)+ 1) short *T0; T0 = (short*) Utils_memAlloc(UTILS_HEAPID_DDR_CACHED_SR, 10240, 8U); //DDR { int t=0; int t0_time; int pclk; TSCL=0; pclk=TSCL; for(t =0;t<10240;t++) { T0[t] = t; } t0_time= TSC_getDelay(pclk); Vps_printf(\"DEBUG:---DDR = %d Result = %d \",t0_time,T0[1024]); } Result: [DSP1 ] 38.649484 s: DEBUG:---DDR = 12412 Result = 1024 //TDA3X with 709M DSP ;VSDK2.12 [HOST] [DSP2 ] 58.513542 s: DEBUG:---DDR = 43946 Result = 1024 //TDA2H with 750M DSP; VSDK2.12 linux Any ideas what is going on? Thank you. Best Regards Sid",
  "imageList" : null,
  "partNumber" : "NA",
  "allResponseList" : [ {
    "contentId" : "",
    "userName" : "Jesse Villarreal",
    "rankPoints" : "5515",
    "rankName" : "TI__Expert",
    "date" : "",
    "userId" : "/members/15438",
    "content" : "Have you checked if they are both built in release mode? You can double check the asm file generated for this file and see that the ASM code for this code section is the same for both.",
    "imageList" : null
  }, {
    "contentId" : "",
    "userName" : "Shiju Sivasankaran",
    "rankPoints" : "13395",
    "rankName" : "TI__Genius",
    "date" : "",
    "userId" : "/members/590110",
    "content" : "also make sure no task preemption during the execution of this code, it can be assured by interrupt disable and enable before and after the code as below UInt hwiKey = Hwi_disable(); :::::::::::::::::::::::::::::::::::: code ::::::::::::::::::::::::::::::::::: Hwi_restore(hwiKey); regards, Shiju",
    "imageList" : null
  }, {
    "contentId" : "",
    "userName" : "user4643736",
    "rankPoints" : "920",
    "rankName" : "Intellectual",
    "date" : "",
    "userId" : "/members/4643736",
    "content" : "Hi Jesse & Shiju, Thanks . I found out when run the test code before my usecase started on tda2x, the result will be close to tda3x. The tda3x is only run a simple chains for test. when my usecase start on tda2x, there will have other three alg plugin links also run on dsp2, therefore the test code will consume more times to run. I think i need Optimization my alg code. Best Regards Sid",
    "imageList" : null
  } ],
  "tags" : [ ],
  "fourmType" : "processors-forum"
}