Profile error: Memory access violation (data fetch)

Hello,
I have VI with a lot of mathematic Nodes. When I try to profile it, I allways get this error: "Memory access violation (data fetch)".
Keil uVision shows this error:
"Memory write not possible (Real-Time Agent)
Memory read not possible (Real-Time Agent)"
Without profiling the VI works on the MCB2400. And profiling also works if I try very simple examples.
bye & thanks
amin

Hi Amin, Alex,
I noticed this issue had been open for some time, so I decided to post directly to save time.
Thanks,
Jaidev Amrite
LabVIEW Embedded PSE
Diagnosis: So apparently, this behavior has nothing to do with the profiler. The culprit is the Advanced Analysis SubVI call (Mean.vi) in BB.vi.
Mean.vi has a call library function node inside it and this CLN is configured to run in its own thread (labVIEW spawns a new thread for each call). Probably due to bad thread management on the ARM (in this case), this call causes a memory violation.
Solution:Turn off the "Run in any thread" setting on the CLN as shown in the attached screenshot - change it to "Run in UI Thread". For good measure also turn off reentrancy on Mean.vi (second screenshot)
National Instruments
LabVIEW Embedded Product Support Engineer

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State Dump for Thread Id 0x574
eax=00000062 ebx=00000000 ecx=00000000 edx=00000004 esi=00000000 edi=05692214
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FramePtr ReturnAd Param#1 Param#2 Param#3 Param#4 Function Name
0012FB28 00737A74 00000000 00000000 05692214 00000400 !StrLen
0012FC40 00736A45 050753E4 05692214 0012FC6C 00736724 !SetKeyboardHandlerProc
0012FC50 00736724 05692214 0012FCB4 05692214 BDBC0000 !SetKeyboardHandlerProc
0012FC6C 00736627 05692214 0569232C 00000400 00000000 !SetKeyboardHandlerProc
0012FC98 0074B470 0012FCB4 BDBD0001 00000000 0569E8E0 !SetKeyboardHandlerProc
0012FCD0 0074ACD0 00000000 0074AC10 0569FFA4 010A2418 !CfgRemove
0012FCE8 007808D5 00000000 00000000 00000001 00000000 !CfgRemove
0012FD08 007ACEB6 00000000 00000000 77E18F95 00000000 !ChkOccurrences
0012FD9C 006033DE 00000001 00000000 77E2ADC1 007A5C80 !WMainLoop
0012FF24 007B2186 00400000 00000000 00000001 00000001 !WMain
0012FFC0 7C581AF6 005C0057 0061006C 7FFDF000 C0000005 !inp
0012FFF0 00000000 007B2030 00000000 000000C8 00000100 kernel32!OpenEventA
*----> Raw Stack Dump <----*
0012fb28 40 fc 12 00 74 7a 73 00 - 00 00 00 00 00 00 00 00 @...tzs.........
0012fb38 14 22 69 05 00 04 00 00 - 16 4d 65 74 68 6f 64 20 ."i......Method
0012fb48 4e 6f 74 20 49 6d 70 6c - 65 6d 65 6e 74 65 64 00 Not Implemented.
0012fb58 55 1f f8 77 18 25 f8 77 - 2f a8 fd 74 c4 01 00 00 U..w.%.w/..t....
0012fb68 05 a5 fd 74 d0 26 ce 01 - 00 00 06 01 10 04 00 00 ...t.&..........
0012fb78 00 00 00 00 00 00 00 00 - 2e fb 69 05 42 e9 69 05 ..........i.B.i.
0012fb88 c1 2f 7b 00 00 00 00 00 - 12 04 00 00 11 04 00 00 ./{.............
0012fb98 30 fb 69 05 12 04 12 00 - bb 35 7b 00 00 00 06 01 0.i......5{.....
0012fba8 11 04 00 00 00 00 00 00 - 00 00 00 00 2e fb 69 05 ..............i.
0012fbb8 35 34 7b 00 4c 34 7b 00 - 48 00 06 01 f8 fb 12 00 54{.L4{.H.......
0012fbc8 10 04 00 00 ec 53 07 05 - 11 04 00 00 08 fc 00 00 .....S..........
0012fbd8 ee c8 77 00 30 fb 69 05 - 11 04 00 00 00 00 00 00 ..w.0.i.........
0012fbe8 00 04 00 00 01 00 00 00 - ec 53 07 05 00 04 00 00 .........S......
0012fbf8 00 38 83 00 1c fc 12 00 - 23 ca 77 00 00 38 83 00 .8......#.w..8..
0012fc08 40 ff 69 05 01 00 00 00 - 00 00 00 00 2d 00 00 00 @.i.........-...
0012fc18 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................
0012fc28 00 00 00 00 00 00 00 00 - 00 00 00 00 01 00 00 00 ................
0012fc38 50 fc 12 00 1a 6a 73 00 - 50 fc 12 00 45 6a 73 00 P....js.P...Ejs.
0012fc48 e4 53 07 05 14 22 69 05 - 6c fc 12 00 24 67 73 00 .S..."i.l...$gs.
0012fc58 14 22 69 05 b4 fc 12 00 - 14 22 69 05 00 00 bc bd ."i......"i.....

For questions like these, you are better off contacting NI directly. Goto www.ni.com/ask for directions. It has been my experience that Dr. Watson error logs are only useful as supplementary information. It is best for support and for the forum if you can provide a clear description on how to cause the error consistently.

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