Experimental Physics and
Industrial Control System

1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 <2019> 2020 2021 2022 2023 2024	Index	1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 <2019> 2020 2021 2022 2023 2024
<== Date ==>		<== Thread ==>

Subject:	PvData , PvAccess, Confusion with different hardware architectures
From:	Heinz Junkes via Tech-talk <[email protected]>
To:	tech-talk <[email protected]>
Date:	Tue, 2 Apr 2019 17:12:23 +0200

Hi folks,

I am running a PvData client on RTEMS on a MVME6100 (PPC) and I see a behaviour that I can't even classify:

PV-Server is a pythonIOC running on a linux - system. The PvStructure is this:

CRYVISIL:STM:FASTSCAN:IMAGE_CHUNK structure
    string[] labels
    structure value
        double[] column0
        double[] column1
        double[] column2
        int[] column3
    long counter
    string descriptor
    structure timeStamp
        long secondsPastEpoch
        int nanoseconds
        int userTag
    structure alarm
        int severity
        int status
        string message

On the RTEMS-CPU the following code is used:

funktion put( long val ) // gets called put ([0…9])
…
 
PvaClientPutDataPtr putData = pvaClientPut->getData();

        PVLongPtr counterField = putData->getPVStructure()->getSubField<PVLong>("counter");
        cout << "counterField : " << counterField << "\n";
        //shared_vector<std::string> labels;
        PVStringArrayPtr labels = putData->getPVStructure()->getSubField<PVStringArray>("labels");
        PVStringArray::const_svector l(labels->view());
        //cout << "labels : "<< labels->view() << "\n";
        
        //for(unsigned int i = 0; i < labels->getCapacity(); i++ ) {
        //  cout << "label index " << i << " : " << l[i] << "\n";
        //}     
                
        shared_vector<double> newX(100);
          //PVIntArray::svector newTimeIndex;
        for(int i=0; i < 100; i++) newX[i] = 0 + i;
        shared_vector<const double> x(freeze(newX));
        
        shared_vector<double> newY(100);
          //PVIntArray::svector newTimeIndex;
        for(int i=0; i < 100; i++) newY[i] = 1 + i;
        shared_vector<const double> y(freeze(newY));
        
        shared_vector<double> newZ(100);
          //PVIntArray::svector newTimeIndex;
        for(int i=0; i < 100; i++) newZ[i] = 2 + i;
        shared_vector<const double> z(freeze(newZ));
        
        shared_vector<int32> newTimeIndex(100);
          //PVIntArray::svector newTimeIndex;
        for(int i=0; i < 100; i++) newTimeIndex[i] = 3 + i;
        shared_vector<const int32> data(freeze(newTimeIndex));
              
       //PVStructurePtr pvValue = putData->getPVStructure();
       // pvValue->dumpValue(cout);
        
        PVStructurePtr pvStructure = putData->getPVStructure()->getSubField<PVStructure>("value");
        if(!pvStructure) {
            cout << "value is not a structure\n";
            return;
        }
        PVFieldPtrArray pvFields = pvStructure->getPVFields();

        for(size_t ind = 0; ind < pvFields.size() ; ++ind)
        {
          PVFieldPtr pvField = pvFields[ind];
          cout << "starting field " << pvField->getFieldName() << " ... " << l[ind] << "\n";
          cout << "type " << pvField->getField()->getType() << "\n";
          if(pvField->getField()->getType()!=scalarArray) {
            cout << "fields is not a scalar array\n";
            continue;
          }
          
          PVScalarArrayPtr pvScalarArray = static_pointer_cast<PVScalarArray>(pvField);      
          pvScalarArray->setLength(100);

          switch (ind) {
            case 0: pvScalarArray->putFrom(x); cout << " put x \n"; break;
            case 1: pvScalarArray->putFrom(y); cout << " put y \n"; break;
            case 2: pvScalarArray->putFrom(z); cout << " put z \n"; break;
            case 3: pvScalarArray->putFrom(data); cout << " put data \n"; break;
          } 

        }
        counterField->put(val);
        
        pvaClientPut->issuePut();


On the RTEMS CPU it self I read:

…
PvaClientPut::checkConnectState channelName CRYVISIL:STM:FASTSCAN:IMAGE_CHUNK
counterField : 0
starting field column0 ... x
type scalarArray
 put x
starting field column1 ... y
type scalarArray
 put y
starting field column2 ... z
type scalarArray
 put z
starting field column3 ... time_index
type scalarArray
 put data
PvaClientPut::issuePut channelName CRYVISIL:STM:FASTSCAN:IMAGE_CHUNK pvStructure
structure
    string[] labels ["x", "y", "z", "time_index"]
    structure value
        double[] column0 [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99]
        double[] column1 [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100]
        double[] column2 [2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101]
        int[] column3 [3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102]
    long counter 1
    string descriptor
    structure timeStamp
        long secondsPastEpoch 0
        int nanoseconds 0
        int userTag 0
    structure alarm
        int severity 0
        int status 0
        string message
 bitSet {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16}

PvaClientPut::putDone channelName CRYVISIL:STM:FASTSCAN:IMAGE_CHUNK status.isOK true
putDone CRYVISIL:STM:FASTSCAN:IMAGE_CHUNK status Status [type=OK]
 counter : 2
PvaClientPut::getData channelName CRYVISIL:STM:FASTSCAN:IMAGE_CHUNK
PvaClientPut::checkConnectState channelName CRYVISIL:STM:FASTSCAN:IMAGE_CHUNK
counterField : 1
starting field column0 ... x
type scalarArray
 put x
starting field column1 ... y
type scalarArray
 put y
starting field column2 ... z
type scalarArray
 put z
starting field column3 ... time_index
type scalarArray
 put data
PvaClientPut::issuePut channelName CRYVISIL:STM:FASTSCAN:IMAGE_CHUNK pvStructure
structure
    string[] labels ["x", "y", "z", "time_index"]
    structure value
        double[] column0 [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99]
        double[] column1 [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100]
        double[] column2 [2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101]
        int[] column3 [3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102]
    long counter 2
    string descriptor
    structure timeStamp
        long secondsPastEpoch 0
        int nanoseconds 0
        int userTag 0
    structure alarm
        int severity 0
        int status 0
        string message
 bitSet {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16}

…

On a Darwin - host with 

pvmonitor -r "" CRYVISIL:STM:FASTSCAN:IMAGE_CHUNK

I read:

CRYVISIL:STM:FASTSCAN:IMAGE_CHUNK structure
    string[] labels ["x", "y", "z", "time_index"]
    structure value
        double[] column0 [0,8,16,24,32,40,48,56,64,72,80,88,96,0,0,2.122e-314,5,13,21,29,37,45,53,61,69,77,85,93,3.49671e-307,6,14,22,30,38,46,54,62,70,78,86,94,3.49671e-307,7,15,23,31,39,47,55,63,71,79,87,95,3.49671e-307,2.75859e-313,6.15379e-313,9.54898e-313,1.29442e-312,1.63394e-312,1.97346e-312,6.2132e-311,2.14309e-314,0,0,2.122e-314,2,10,18,26,34,42,50,58,66,74,82,90,98,6,14,22,30,38,46,54,62,70,78,86,94,2.02073e-321,3.60739e-313,7.00259e-313,1.03978e-312,1.3793e-312,1.71882e-312,2.05834e-312,2.43117e-315,0]
        double[] column1 [1,9,17,25,33,41,49,57,65,73,81,89,97,5,13,21,29,37,45,53,61,69,77,85,93,101,3.18299e-313,6.57819e-313,9.97338e-313,1.33686e-312,1.67638e-312,2.0159e-312,2.09612e-296,5.26795e-304,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
        double[] column2 [2,10,18,26,34,42,50,58,66,74,82,90,98,1.9098e-313,5.30499e-313,8.70018e-313,1.20954e-312,1.54906e-312,1.88858e-312,5.26795e-304,3.05017e+06,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
        int[] column3 [3,7,11,15,19,23,27,31,35,39,43,47,51,55,59,63,67,71,75,79,83,87,91,95,99,0,42691016,42691272,16195288,1414742849,1258291200,16195288,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
    long counter 1
    string descriptor
    structure timeStamp
        long secondsPastEpoch 0
        int nanoseconds 0
        int userTag 0
    structure alarm
        int severity 0
        int status 0
        string message
CRYVISIL:STM:FASTSCAN:IMAGE_CHUNK structure
    string[] labels ["x", "y", "z", "time_index"]
    structure value
        double[] column0 [0,8,16,24,32,40,48,56,64,72,80,88,96,1,9,17,25,33,41,49,57,65,73,81,89,97,2,10,18,26,34,42,50,58,66,74,82,90,98,6.36599e-314,4.03179e-313,7.42699e-313,1.08222e-312,1.42174e-312,1.76126e-312,2.10078e-312,5.09279e-313,1.86736e-312,0,0,9.16401e-72,5,13,21,29,37,45,53,61,69,77,85,93,1.71457e-311,9,17,25,33,41,49,57,65,73,81,89,97,1.4854e-313,4.88059e-313,8.27578e-313,1.1671e-312,1.50662e-312,1.84614e-312,4.29492e-311,1.6458e+98,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
        double[] column1 [1,9,17,25,33,41,49,57,65,73,81,89,97,2,10,18,26,34,42,50,58,66,74,82,90,98,6.36599e-314,4.03179e-313,7.42699e-313,1.08222e-312,1.42174e-312,1.76126e-312,2.10078e-312,5.09279e-313,1.86736e-312,0,0,9.16401e-72,5,13,21,29,37,45,53,61,69,77,85,93,1.71457e-311,9,17,25,33,41,49,57,65,73,81,89,97,1.4854e-313,4.88059e-313,8.27578e-313,1.1671e-312,1.50662e-312,1.84614e-312,4.29492e-311,1.6458e+98,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
        double[] column2 [2,10,18,26,34,42,50,58,66,74,82,90,98,6.36599e-314,4.03179e-313,7.42699e-313,1.08222e-312,1.42174e-312,1.76126e-312,2.10078e-312,5.09279e-313,1.86736e-312,0,0,9.16401e-72,5,13,21,29,37,45,53,61,69,77,85,93,1.71457e-311,9,17,25,33,41,49,57,65,73,81,89,97,1.4854e-313,4.88059e-313,8.27578e-313,1.1671e-312,1.50662e-312,1.84614e-312,4.29492e-311,1.6458e+98,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
        int[] column3 [3,7,11,15,19,23,27,31,35,39,43,47,51,55,59,63,67,71,75,79,83,87,91,95,99,2904,1,42698272,24,0,5205556,1095189855,88,0,0,0,0,0,0,0,0,0,2,0,825241856,0,42693840,1074266112,1075052544,1075576832,1075970048,1076232192,1076494336,1076756480,1076953088,1077084160,1077215232,1077346304,1077477376,1077608448,1077739520,1077870592,1077968896,1078034432,1078099968,1078165504,1078231040,1078296576,1078362112,1078427648,1078493184,1078558720,1078624256,1078689792,1078755328,1078820864,1078886400,1078951936,1079001088,1079033856,1079066624,1079099392,1079132160,1079164928,1079197696,1079230464,1079263232,1079296000,1079328768,1079361536,1079394304,1079427072,1079459840,1079492608,1079525376,1079558144,808,1074266112,1075052544,1075576832]
    long counter 2
    string descriptor
    structure timeStamp
        long secondsPastEpoch 0
        int nanoseconds 0
        int userTag 0
    structure alarm
        int severity 0
        int status 0
        string message


Only every 4th element is included in the  int array (ind == 3) and every 8th element in the double arrays (ind == 0-2)?


If I run the client code on the Darwin host, everything looks fine. All 100 elements are taken over in the arrays on the server.


CRYVISIL:STM:FASTSCAN:IMAGE_CHUNK structure
    string[] labels ["x", "y", "z", "time_index"]
    structure value
        double[] column0 [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99]
        double[] column1 [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100]
        double[] column2 [2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101]
        int[] column3 [3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102]
    long counter 9
    string descriptor
    structure timeStamp
        long secondsPastEpoch 0
        int nanoseconds 0
        int userTag 0
    structure alarm
        int severity 0
        int status 0
        string message

Does anyone have any idea what's happening?
I guess of course something with type-len (int ==4, double ==8).

Danke, Heinz

Attachment: smime.p7s
Description: S/MIME cryptographic signature

Replies:: Re: PvData , PvAccess, Confusion with different hardware architectures Michael Davidsaver via Tech-talk

Navigate by Date:: Prev: EPICS 7 incompatibility in errMdef.h Dirk Zimoch via Tech-talk; Next: Re: EPICS Base 3.15 release notes epicsVersion.h macro snippet issues J. Lewis Muir via Tech-talk; Index: 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 <2019> 2020 2021 2022 2023 2024
Navigate by Thread:: Prev: EPICS 7 incompatibility in errMdef.h Dirk Zimoch via Tech-talk; Next: Re: PvData , PvAccess, Confusion with different hardware architectures Michael Davidsaver via Tech-talk; Index: 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 <2019> 2020 2021 2022 2023 2024

ANJ, 02 Apr 2019

· Home · News · About · Base · Modules · Extensions · Distributions · Download ·
· Search · EPICS V4 · IRMIS · Talk · Bugs · Documents · Links · Licensing ·

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System