Accera v1.2 Reference

accera.Schedule.is_valid_loop_order(*order)

The is_valid_loop_order function determines if an order of indices is valid. For a description of valid schedule orders, refer to reorder.

Arguments

argument	description	type/default
*order	The order of indices to check for validity	variable Index arguments

Examples

Checks if an order is valid:

print(schedule.is_valid_loop_order(k, i, j))

Uses this function as part of a parameter filter to determine which permutations of loop order parameters are valid:

P1, P2, P2, P4, P5, loop_order = acc.create_parameters()
schedule.reorder(order=loop_order)

def my_filter(parameters_choice):
    P1, P2, P3, P4, P5, loop_order = parameters_choice

    return P1 > P2 \
        and P3 > P4 \
        and P1 * P5 < P3 \
        and P2 * P5 < P4 \
        and schedule.is_valid_loop_order(loop_order)

 parameters = acc.create_parameter_grid({
        P1: [64, 128, 256],
        P2: [32, 128], 
        P3: [16, 32, 128],
        P4: [8, 64],
        P5: [4],
        loop_order: (i, j, k, ii, jj, kk)
    }, my_filter)

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Last update: 2023-04-17