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AmeyaVS last won the day on November 19 2018

AmeyaVS had the most liked content!


About AmeyaVS

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  • Birthday 02/28/1989

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  1. Hello @chatbq, There is not enough context, probably the exception is being thrown from another module. Overall the code seems fine. You can try and see from where the exception is being thrown from the debugger. Regards, Ameya Vikram Singh
  2. AmeyaVS

    Error in "make check" Cygwin

    Hello @egroj97, This is a known issue on Cygwin(64-bit) with QuickThreads. You need to pass the command-line option: "--enable-pthreads" to the configure script. Kindly refer the discussion about this here: On another note running applications built from source on Cygwin(64-bit) it much slower than running then on native Linux even within a VM. If you have Windows 10 with WSL(Windows Subsystem for Linux) then you could probably try that route to build and install the SystemC library. But I have not tried that out myself, and currently I do not see it being supported/validated by the working group. Anyway it will be nice to know if the library is functional on top of WSL. Hope this helps. Regards, Ameya Vikram Singh
  3. Hello @katang, Here is a snippet from the SystemC release 2.3.3 file:(cmake/INSTALL_USING_CMAKE) containing reference to CMAKE_INSTALL_PREFIX CMAKE_INSTALL_PREFIX Root directory of the SystemC libraries installation (defaults to $ENV{SYSTEMC_HOME} if set to an absolute path and otherwise to either /opt/systemc/ (Unix-like platforms including CYGWIN), $ENV{ProgramFiles}/SystemC/ (on Windows systems), or ${CMAKE_INSTALL_PREFIX}/systemc. Anyway manually installing third party or other libraries in system path(like /usr or other path) is not advisable. I usually setup libraries/tools in my own user directories so as not to disturb other people working on the shared servers. Also I prefer to have a clean build workspace every time, i.e. I do not keep/reuse older build directories for my projects. Hope this helps. Regards, Ameya Vikram Singh
  4. Hello @katang, As per your comments: CMAKE_INSTALL_PREFIX is never left uninitialized, here is the official CMake documentation: https://cmake.org/cmake/help/latest/variable/CMAKE_INSTALL_PREFIX.html https://cmake.org/cmake/help/latest/variable/CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT.html Anyway it is a very bad idea to install in the systems default location: /usr/local or something similar. In-case you have multiple SystemC installations and if you are using the CMAKE_MODULE_PATH or CMAKE_PREFIX_PATH variable, then you would probably need to see in what order are the paths specified. Hope it helps. Regards, Ameya Vikram Singh
  5. Hello @katang, I am not an expert on this topic. But here is an article which summarizes the C++ Standard Changes after(C++98/03): https://developers.redhat.com/blog/2015/02/05/gcc5-and-the-c11-abi/ One thing to understand is the standards body and the compiler teams came with solution to handle such underlying core changes, without the end user needing to completely rewriting their application and library implementations. With just a recompilation with newer standard flags gave most of the applications/libraries to start using the latest C++ standards features. Having a consistent compiler standards and other flags provides one with confidence that the application/library that one is shipping is meeting their expectations. And trust me you don't want to debug issues in library that got linked with slightly flags or slightly different API's and you are getting different run-time behavior of the application at every execution run(https://en.wikipedia.org/wiki/Heisenbug). Hope this helps. Regards, Ameya Vikram Singh
  6. Hello @katang, It seems the issue is due to mismatch between the C++ compiler flags between your SystemC build and your application. Can you check if they are consistent? Regards, Ameya Vikram Singh
  7. Hello @pmeyeratdatest, Can you specify the C++ Standard flag to the compilation command line parameters. # E.g.: g++ -std=c++11 <your_project_sources.cpp> -c <other_compiler_flags> Since It does not have any effect at link time. Thanks and Regards, Ameya Vikram Singh
  8. Hello @pmeyeratdatest, This line indicates the different command line parameters for the creation of the object files. Also, why are the library specified on the command line twice?(i.e. [-lscv and -lsystemc] and [../build/systemc-2.3.2/lib-linux64/libscv.a and ../build/systemc-2.3.2/lib-linux64/libsystemc.a] Can try this command, and let us know if the message changes g++-4.8 -g -Wall -ggdb -std=c++11 -O0 -D GCC48 -Wall ./main.o -o testCMD -L../build/systemc-2.3.2/lib-linux64 ../../CPP-NumericalMethods/libNumericalMethods.a ../build/systemc-2.3.2/lib-linux64/libscv.a ../build/systemc-2.3.2/lib-linux64/libsystemc.a -lscv -lsystemc -lpthread -lm Hope this helps. Regards, Ameya Vikram Singh
  9. Hello @mizi, Change the following lines in Makefile.defs: (lines 33 to 36) // From application/lib/%.so : application/src/%.o $(CC) -shared -W1,-soname,$@ -o $@ $< router/lib/%.so : router/src/%.o $(CC) -shared -W1,-soname,$@ -o $@ $< // To these lines: application/lib/%.so : application/src/%.o $(CC) -shared -Wl,-soname,$@ -o $@ $< router/lib/%.so : router/src/%.o $(CC) -shared -Wl,-soname,$@ -o $@ $< Notice the subtle difference between the command line parameter: -Wl (i.e. letter l not the number 1). Hope this helps. Regards, Ameya Vikram Singh
  10. Hello @mizi, You probably missed out on this: After taking a cursory look at the sources found following references: core/Controllers.cpp line 44: RT_ALGO: a global variable to the routing algorithm( 😞 ) Which has been initialized in config/default.h line 35 to a default value of XY. It seems you might need to integrate your algorithm following their design principles, which you can look into the existing classes of routing algorithm to figure out what all API's your algorithm need to provide to be compliant with the infrastructure. Hope this little insight helps. Best Regards, Ameya Vikram Singh
  11. Hello @mizi, Though I am not familiar with the Nirgam Simulator. But can you provide the answers to the following queries: Did you add your dependencies in the Makefiles/Build scripts? My next guess would be did you look into any documentation available for the simulator? Like running the simulation with various different configurations. Does it use command line options or config files or both? Even after changing those configuration files/command line options are you able to observe any change in simulation behavior? If the answer to the above query is no then you would probably need to get your hands dirty to understand the internals, and possibly modify the existing implementation to suite your needs. Hope this helps in someway. Regards, Ameya Vikram Singh
  12. Hello @mizi, Can you provide a minimal sample code and the environment details to reproduce the issue? With the current information it is very difficult to provide a solution/suggestion. Regards, Ameya Vikram Singh
  13. AmeyaVS


    Hello @ZEESHAN KHATIB, The BUSWIDTH template parameter denotes the underlying units of the transfers taking place. It can be thought of as 32-bit lines for carrying data at an RTL level when BUSWIDTH=32. At every cycle one can assume a 32-bit bus can transfer 32-bits(i.e. 4 bytes) of data. Now lets say we want to transfer about 1 GB of data using the TLM interface, It can be achieved easily using the generic payload. But then how would you maintain the timing consistency? With the attribute BUSWIDTH you can effectively approximate the time required to transfer the above mentioned data. If you want more details have a look at the references below about the usage of TLM interface for Serial modelling: http://forums.accellera.org/topic/6046-serial-transmission/ https://www.greensocs.com/sites/www.brightsocs.com/files/docs/GS_Serial.pdf Hope this small insight helps! Note: On another note let's assume you want to model an 8/16-bit computing systems would go about creating new interfaces? Also, with the RISC-V taking the lead in 128-bit CPU architecture, we might see CPU's with a big data buses. Best Regards, Ameya Vikram Singh
  14. AmeyaVS

    simple socket

    Hello @TRANG, By using sc_vector the sockets would be named as follows: initiator_socket[0] : " initiator_socket_0" initiator_socket [ 1] : " initiator_socket_1" initiator_socket [ 2] : " initiator_socket_2" initiator_socket [ 3] : " initiator_socket_3" or you can use something mentioned here in this answer to name the interfaces. It will be better to use the default naming scheme as it would make it consistent across the SystemC simulation. Hope it helps. Regards, Ameya Vikram Singh
  15. AmeyaVS

    simple socket

    Hello @TRANG, You probably need to change from this: sc_vector< simple_initiator_socket_tagged<Router >* > initiator_socket; to this: sc_core::sc_vector< tlm_utils::simple_initiator_socket_tagged<Router > > initiator_socket; And to understand the better use of sc_vector you can probably search and find many references on using sc_vector in the forum or on stackoverflow such as these ones: http://forums.accellera.org/topic/1849-array-of-sc_vector-binding-and-assembling-help/ https://stackoverflow.com/questions/35425052/how-to-initialize-a-systemc-port-name-which-is-an-array Hope these helps. Regards, Ameya Vikram Singh