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Drop cuOptCreateRangedProblem workaround for multi-GPU PDLP #24

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Merged
0x17 merged 1 commit into from
Oct 9, 2026
Merged

Drop cuOptCreateRangedProblem workaround for multi-GPU PDLP #24

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18 changes: 3 additions & 15 deletions gmscuopt.c
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Original file line number Diff line number Diff line change
Expand Up @@ -161,8 +161,6 @@ int main(int argc, char *argv[])
cuopt_float_t* constraint_matrix_coefficent_values=NULL;
cuopt_float_t* objective_coefficients=NULL;
cuopt_float_t* rhs=NULL;
cuopt_float_t* constraint_lower_bounds=NULL;
cuopt_float_t* constraint_upper_bounds=NULL;
cuopt_float_t* lower_bounds=NULL;
cuopt_float_t* upper_bounds=NULL;
char* constraint_sense=NULL;
Expand Down Expand Up @@ -452,8 +450,6 @@ int main(int argc, char *argv[])
constraint_matrix_coefficent_values = malloc(nnz * sizeof(cuopt_float_t));
objective_coefficients = malloc((num_variables) * sizeof(cuopt_float_t));
rhs = malloc((num_linear_constraints) * sizeof(cuopt_float_t));
constraint_lower_bounds = malloc((num_linear_constraints) * sizeof(cuopt_float_t));
constraint_upper_bounds = malloc((num_linear_constraints) * sizeof(cuopt_float_t));
lower_bounds = malloc((num_variables) * sizeof(cuopt_float_t));
upper_bounds = malloc((num_variables) * sizeof(cuopt_float_t));
constraint_sense = malloc((num_linear_constraints) * sizeof(char));
Expand All @@ -464,8 +460,6 @@ int main(int argc, char *argv[])
(constraint_matrix_coefficent_values == NULL) ||
(objective_coefficients == NULL) ||
(rhs == NULL) ||
(constraint_lower_bounds == NULL) ||
(constraint_upper_bounds == NULL) ||
(lower_bounds == NULL) ||
(upper_bounds == NULL) ||
(constraint_sense == NULL) ||
Expand Down Expand Up @@ -604,8 +598,6 @@ int main(int argc, char *argv[])

constraint_sense[lin_row] = orig_sense[i];
rhs[lin_row] = orig_rhs[i];
constraint_lower_bounds[lin_row] = (orig_sense[i] == CUOPT_LESS_THAN) ? -CUOPT_INFINITY : orig_rhs[i];
constraint_upper_bounds[lin_row] = (orig_sense[i] == CUOPT_GREATER_THAN) ? CUOPT_INFINITY : orig_rhs[i];

nnz += rnz;
lin_row++;
Expand All @@ -619,9 +611,7 @@ int main(int argc, char *argv[])
goto DONE;
}

// Ranged form, since cuOpt's multi-GPU PDLP (without presolve) ignores the row types + RHS
// form of cuOptCreateProblem and sees no constraints
status = cuOptCreateRangedProblem(
status = cuOptCreateProblem(
num_linear_constraints, // Use mapped linear size
num_variables,
(gmoSense(gmo) == gmoObj_Min) ? CUOPT_MINIMIZE : CUOPT_MAXIMIZE,
Expand All @@ -630,8 +620,8 @@ int main(int argc, char *argv[])
constraint_matrix_row_offsets,
constraint_matrix_column_indices,
constraint_matrix_coefficent_values,
constraint_lower_bounds,
constraint_upper_bounds,
constraint_sense,
rhs,
lower_bounds,
upper_bounds,
variable_types,
Expand Down Expand Up @@ -1150,8 +1140,6 @@ int main(int argc, char *argv[])
free(constraint_matrix_coefficent_values);
free(objective_coefficients);
free(rhs);
free(constraint_lower_bounds);
free(constraint_upper_bounds);
free(lower_bounds);
free(upper_bounds);
free(constraint_sense);
Expand Down
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