1 /// @file 2 /// Test creation, evaluation, and destruction for QFunction 3 /// \test Test creation, evaluation, and destruction for QFunction 4 #include <ceed.h> 5 #include <math.h> 6 7 #include "t409-qfunction.h" 8 9 int main(int argc, char **argv) { 10 Ceed ceed; 11 CeedVector in[16], out[16]; 12 CeedVector U, V; 13 CeedQFunction qf; 14 CeedQFunctionContext ctx; 15 CeedInt Q = 8; 16 const CeedScalar *v; 17 bool is_writable = true; 18 CeedScalar ctx_data[5] = {1, 2, 3, 4, 5}; 19 20 CeedInit(argv[1], &ceed); 21 22 CeedQFunctionCreateInterior(ceed, 1, scale, scale_loc, &qf); 23 CeedQFunctionAddInput(qf, "u", 1, CEED_EVAL_INTERP); 24 CeedQFunctionAddOutput(qf, "v", 1, CEED_EVAL_INTERP); 25 26 CeedQFunctionContextCreate(ceed, &ctx); 27 CeedQFunctionContextSetData(ctx, CEED_MEM_HOST, CEED_COPY_VALUES, 28 sizeof(ctx_data), &ctx_data); 29 CeedQFunctionSetContext(qf, ctx); 30 CeedQFunctionSetContextWritable(qf, is_writable); 31 32 CeedVectorCreate(ceed, Q, &U); 33 CeedVectorSetValue(U, 1.0); 34 CeedVectorCreate(ceed, Q, &V); 35 CeedVectorSetValue(V, 0.0); 36 37 { 38 in[0] = U; 39 out[0] = V; 40 CeedQFunctionApply(qf, Q, in, out); 41 } 42 43 CeedVectorGetArrayRead(V, CEED_MEM_HOST, &v); 44 for (CeedInt i=0; i<Q; i++) 45 if (fabs(v[i] - ctx_data[1]) > 100.*CEED_EPSILON) 46 // LCOV_EXCL_START 47 printf("v[%" CeedInt_FMT "] %f != 2.0\n", i, v[i]); 48 // LCOV_EXCL_STOP 49 CeedVectorRestoreArrayRead(V, &v); 50 51 // Check for written context data 52 CeedScalar *ctx_data_new; 53 CeedQFunctionContextGetDataRead(ctx, CEED_MEM_HOST, &ctx_data_new); 54 if (ctx_data_new[0] != 42) 55 // LCOV_EXCL_START 56 printf("Context data not written: %f != 42\n", ctx_data_new[0]); 57 // LCOV_EXCL_STOP 58 CeedQFunctionContextRestoreDataRead(ctx, &ctx_data_new); 59 60 // Assert that context will not be written 61 // Note: The interface cannot enforce this in user code 62 // so setting is_writable == false and then calling 63 // CeedQFunctionApply to mutate the context would lead 64 // to inconsistent data on the GPU. 65 // Only the `/cpu/self/memcheck/*` backends verify that 66 // read-only access resulted in no changes to the context data 67 CeedQFunctionContextGetData(ctx, CEED_MEM_HOST, &ctx_data_new); 68 ctx_data_new[0] = 5; 69 CeedQFunctionContextRestoreData(ctx, &ctx_data_new); 70 is_writable = false; 71 CeedQFunctionSetContextWritable(qf, is_writable); 72 { 73 in[0] = U; 74 out[0] = V; 75 // Will only error in `/cpu/self/memcheck/*` backends 76 CeedQFunctionApply(qf, Q, in, out); 77 } 78 79 CeedVectorDestroy(&U); 80 CeedVectorDestroy(&V); 81 CeedQFunctionDestroy(&qf); 82 CeedQFunctionContextDestroy(&ctx); 83 CeedDestroy(&ceed); 84 return 0; 85 } 86