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Add OpenMP kernels #389
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e4d35d7
Modify the conda environment to add openmp library and resource direc…
mcbarton 2afd7e5
Add OpenMP kernel configs
mcbarton 2d2a827
Configure kernels in cmake
mcbarton 47ed0ca
Load libomp library automatically if -fopenmp used
mcbarton cc954a4
Add example notebooks
mcbarton 41df734
Add test for C++ + OpenMP kernels
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,81 @@ | ||
| { | ||
| "cells": [ | ||
| { | ||
| "cell_type": "code", | ||
| "execution_count": 1, | ||
| "id": "73cbab37-71dd-477d-981b-f2ec28c01bd6", | ||
| "metadata": {}, | ||
| "outputs": [], | ||
| "source": [ | ||
| "#include <stdio.h>\n", | ||
| "#include <omp.h>" | ||
| ] | ||
| }, | ||
| { | ||
| "cell_type": "code", | ||
| "execution_count": 3, | ||
| "id": "c2b754ad-9553-4a42-b990-f990a9a269ed", | ||
| "metadata": {}, | ||
| "outputs": [], | ||
| "source": [ | ||
| "int main() {\n", | ||
| " int max_threads = omp_get_max_threads();\n", | ||
| "\n", | ||
| " printf(\"max threads: %d\\n\", max_threads);\n", | ||
| " omp_set_num_threads(max_threads);\n", | ||
| "\n", | ||
| "#pragma omp parallel\n", | ||
| " {\n", | ||
| " int id = omp_get_thread_num();\n", | ||
| " printf(\"Hello World from thread = %d with %d threads\\n\", id, omp_get_num_threads());\n", | ||
| " }\n", | ||
| "\n", | ||
| " printf(\"all done, with hopefully %d threads\\n\", max_threads);\n", | ||
| "}" | ||
| ] | ||
| }, | ||
| { | ||
| "cell_type": "code", | ||
| "execution_count": 4, | ||
| "id": "a37a13d4-fc82-496e-8f42-9e718a8c2aa0", | ||
| "metadata": {}, | ||
| "outputs": [ | ||
| { | ||
| "name": "stdout", | ||
| "output_type": "stream", | ||
| "text": [ | ||
| "max threads: 8\n", | ||
| "Hello World from thread = 0 with 8 threads\n", | ||
| "Hello World from thread = 3 with 8 threads\n", | ||
| "Hello World from thread = 4 with 8 threads\n", | ||
| "Hello World from thread = 2 with 8 threads\n", | ||
| "Hello World from thread = 7 with 8 threads\n", | ||
| "Hello World from thread = 1 with 8 threads\n", | ||
| "Hello World from thread = 6 with 8 threads\n", | ||
| "Hello World from thread = 5 with 8 threads\n", | ||
| "all done, with hopefully 8 threads\n" | ||
| ] | ||
| } | ||
| ], | ||
| "source": [ | ||
| "main();" | ||
| ] | ||
| } | ||
| ], | ||
| "metadata": { | ||
| "kernelspec": { | ||
| "display_name": "C++17 (xcpp+OpenMP)", | ||
| "language": "cpp", | ||
| "name": "xcpp17-omp" | ||
| }, | ||
| "language_info": { | ||
| "codemirror_mode": "text/x-c++src", | ||
| "file_extension": ".cpp", | ||
| "mimetype": "text/x-c++src", | ||
| "name": "C++", | ||
| "version": "17" | ||
| } | ||
| }, | ||
| "nbformat": 4, | ||
| "nbformat_minor": 5 | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,223 @@ | ||
| { | ||
| "cells": [ | ||
| { | ||
| "cell_type": "code", | ||
| "execution_count": 1, | ||
| "id": "156447d2-9279-45a0-890b-4e519d2c796b", | ||
| "metadata": {}, | ||
| "outputs": [], | ||
| "source": [ | ||
| "#include <stdlib.h>\n", | ||
| "#include <stdio.h>\n", | ||
| "#include <omp.h>" | ||
| ] | ||
| }, | ||
| { | ||
| "cell_type": "code", | ||
| "execution_count": 2, | ||
| "id": "c96fdeb0-817d-48c0-af8e-20a52947d60b", | ||
| "metadata": {}, | ||
| "outputs": [], | ||
| "source": [ | ||
| "#ifndef N\n", | ||
| "#define N 5\n", | ||
| "#endif\n", | ||
| "#ifndef FS\n", | ||
| "#define FS 38\n", | ||
| "#endif" | ||
| ] | ||
| }, | ||
| { | ||
| "cell_type": "code", | ||
| "execution_count": 4, | ||
| "id": "22f97c49-78d1-496e-ac7c-978aed95331a", | ||
| "metadata": {}, | ||
| "outputs": [], | ||
| "source": [ | ||
| "struct node {\n", | ||
| " int data;\n", | ||
| " int fibdata;\n", | ||
| " struct node *next;\n", | ||
| "};" | ||
| ] | ||
| }, | ||
| { | ||
| "cell_type": "code", | ||
| "execution_count": 5, | ||
| "id": "b16b1e8a-8831-4b8d-9d57-09deeaaa88ee", | ||
| "metadata": {}, | ||
| "outputs": [], | ||
| "source": [ | ||
| "struct node *init_list(struct node *p);\n", | ||
| "void processwork(struct node *p);\n", | ||
| "int fib(int n);" | ||
| ] | ||
| }, | ||
| { | ||
| "cell_type": "code", | ||
| "execution_count": 6, | ||
| "id": "0ef8af6c-1d6f-4c68-84bc-3dd1d8092b06", | ||
| "metadata": {}, | ||
| "outputs": [], | ||
| "source": [ | ||
| "int fib(int n) {\n", | ||
| " int x, y;\n", | ||
| " if (n < 2) {\n", | ||
| " return (n);\n", | ||
| " } else {\n", | ||
| " x = fib(n - 1);\n", | ||
| " y = fib(n - 2);\n", | ||
| " return (x + y);\n", | ||
| " }\n", | ||
| "}" | ||
| ] | ||
| }, | ||
| { | ||
| "cell_type": "code", | ||
| "execution_count": 7, | ||
| "id": "1fa0307d-fdc9-4503-95cb-1c6448791354", | ||
| "metadata": {}, | ||
| "outputs": [], | ||
| "source": [ | ||
| "void processwork(struct node *p) {\n", | ||
| " int n, temp;\n", | ||
| " n = p->data;\n", | ||
| " temp = fib(n);\n", | ||
| "\n", | ||
| " p->fibdata = temp;\n", | ||
| "}" | ||
| ] | ||
| }, | ||
| { | ||
| "cell_type": "code", | ||
| "execution_count": 8, | ||
| "id": "03acb599-9329-49ff-8aff-c0902adb6c3c", | ||
| "metadata": {}, | ||
| "outputs": [], | ||
| "source": [ | ||
| "struct node *init_list(struct node *p) {\n", | ||
| " int i;\n", | ||
| " struct node *head = NULL;\n", | ||
| " struct node *temp = NULL;\n", | ||
| "\n", | ||
| " head = (struct node*) malloc(sizeof(struct node));\n", | ||
| " p = head;\n", | ||
| " p->data = FS;\n", | ||
| " p->fibdata = 0;\n", | ||
| " for (i = 0; i < N; i++) {\n", | ||
| " temp = (struct node*) malloc(sizeof(struct node));\n", | ||
| " p->next = temp;\n", | ||
| " p = temp;\n", | ||
| " p->data = FS + i + 1;\n", | ||
| " p->fibdata = i + 1;\n", | ||
| " }\n", | ||
| "\n", | ||
| " p->next = NULL;\n", | ||
| " return head;\n", | ||
| "}" | ||
| ] | ||
| }, | ||
| { | ||
| "cell_type": "code", | ||
| "execution_count": 9, | ||
| "id": "f2dfb41b-e55f-43c0-b7f6-546a1697acb1", | ||
| "metadata": {}, | ||
| "outputs": [], | ||
| "source": [ | ||
| "int main() {\n", | ||
| " double start, end;\n", | ||
| " struct node *p = NULL;\n", | ||
| " struct node *temp = NULL;\n", | ||
| " struct node *head = NULL;\n", | ||
| "\n", | ||
| " printf(\"Process linked list\\n\");\n", | ||
| " printf(\" Each linked list node will be processed by function 'processwork()'\\n\");\n", | ||
| " printf(\" Each ll node will compute %d fibonacci numbers beginning with %d\\n\", N, FS);\n", | ||
| "\n", | ||
| " omp_set_num_threads(omp_get_max_threads());\n", | ||
| "\n", | ||
| " p = init_list(p);\n", | ||
| " head = p;\n", | ||
| "\n", | ||
| " start = omp_get_wtime();\n", | ||
| "\n", | ||
| "#pragma omp parallel\n", | ||
| " {\n", | ||
| "#pragma omp master\n", | ||
| " printf(\"Threads: %d\\n\", omp_get_num_threads());\n", | ||
| "\n", | ||
| "#pragma omp single\n", | ||
| " {\n", | ||
| " p = head;\n", | ||
| " while (p) {\n", | ||
| "#pragma omp task firstprivate(p) // first private is required\n", | ||
| " {\n", | ||
| " processwork(p);\n", | ||
| " }\n", | ||
| " p = p->next;\n", | ||
| " }\n", | ||
| " }\n", | ||
| " }\n", | ||
| "\n", | ||
| " end = omp_get_wtime();\n", | ||
| " p = head;\n", | ||
| " while (p != NULL) {\n", | ||
| " printf(\"%d : %d\\n\", p->data, p->fibdata);\n", | ||
| " temp = p->next;\n", | ||
| " free(p);\n", | ||
| " p = temp;\n", | ||
| " }\n", | ||
| "\n", | ||
| " free(p);\n", | ||
| " printf(\"Compute Time: %f seconds\\n\", end - start);\n", | ||
| "\n", | ||
| " return 0;\n", | ||
| "}" | ||
| ] | ||
| }, | ||
| { | ||
| "cell_type": "code", | ||
| "execution_count": 10, | ||
| "id": "353e5dfd-fcae-43e6-97e3-ec98070811a1", | ||
| "metadata": {}, | ||
| "outputs": [ | ||
| { | ||
| "name": "stdout", | ||
| "output_type": "stream", | ||
| "text": [ | ||
| "Process linked list\n", | ||
| " Each linked list node will be processed by function 'processwork()'\n", | ||
| " Each ll node will compute 5 fibonacci numbers beginning with 38\n", | ||
| "Threads: 8\n", | ||
| "38 : 39088169\n", | ||
| "39 : 63245986\n", | ||
| "40 : 102334155\n", | ||
| "41 : 165580141\n", | ||
| "42 : 267914296\n", | ||
| "43 : 433494437\n", | ||
| "Compute Time: 2.617225 seconds\n" | ||
| ] | ||
| } | ||
| ], | ||
| "source": [ | ||
| "main();" | ||
| ] | ||
| } | ||
| ], | ||
| "metadata": { | ||
| "kernelspec": { | ||
| "display_name": "C++17 (xcpp+OpenMP)", | ||
| "language": "cpp", | ||
| "name": "xcpp17-omp" | ||
| }, | ||
| "language_info": { | ||
| "codemirror_mode": "text/x-c++src", | ||
| "file_extension": ".cpp", | ||
| "mimetype": "text/x-c++src", | ||
| "name": "C++", | ||
| "version": "17" | ||
| } | ||
| }, | ||
| "nbformat": 4, | ||
| "nbformat_minor": 5 | ||
| } |
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Do we still need this? Is that the include path to openmp? I feel uncomfortable exporting that information at build time whereas it's needed at runtime and we should be able to resolve that then. However, that's not a new problem per se because we already to this for other things..