shared-memory

I'm trying to exploit shared memory in this kernel function, but the performance are not as good as I was expecting. This function is called many times in my application (about 1000 times or more), so I was thinking to exploit shared memory to avoid the memory latency. But something is wrong apparently because my application became really slow since i'm using shared memory. This is the kernel: __global__ void AndBitwiseOperation(int* _memory_device, int b1_size, int* b1_memory, int* b2_memory){ int j = 0; // index GPU - Transaction-wise unsigned int i = blockIdx.x * blockDim.x + threadIdx.x;

How can I share the data between two managed processes using shared memory segments? I am using "object" inside C++/CLI code to share the data with some other part of memory in the other process. I am using following code segment. #define BUFFER_SIZE 32768 #pragma data_seg (".SHAREDMEMORY") bool _Locked = false; bool _Initialized = false; unsigned char[10000] data = NULL; #pragma data_seg() #pragma comment(linker,"/SECTION:.SHAREDMEMORY,RWS") but I need it to be: #pragma data_seg (".SHAREDMEMORY") bool _Locked = false; bool _Initialized = false; object^ _object = nullptr; #pragma data_seg()

I'm making 4 programs that creates a POSIX shared memory object, an array of structs, that will be shared by the other 3 processes. Basically this project simulates files. Program #1 creates the object. Program #2 takes a filename and a string as arguments, then the filename and string (file contents) are saved to shared memory as a struct that is put in an available element of the array. Program #3 will list the filenames. Program #4 will search for a given file and display its contents. The trouble I'm having is initialize an array of structs into shared memory. I keep getting the following