Accounted for different hardware level bandwidths in GPU and CPU (#124) #342

Job	Run time
prepare	10s
run-tests (2, FUND, -no-omp, -no-mpi, -expclover)	32s
run-tests (2, FUND, -no-omp, -no-mpi, -no-expclover)	30s
run-tests (2, FUND, -no-omp, -mpi, -expclover)	45s
run-tests (2, FUND, -no-omp, -mpi, -no-expclover)	44s
run-tests (2, ADJ, -no-omp, -no-mpi, -expclover)	34s
run-tests (2, ADJ, -no-omp, -no-mpi, -no-expclover)	30s
run-tests (2, ADJ, -no-omp, -mpi, -expclover)	50s
run-tests (2, ADJ, -no-omp, -mpi, -no-expclover)	49s
run-tests (3, FUND, -no-omp, -no-mpi, -expclover)	40s
run-tests (3, FUND, -no-omp, -no-mpi, -no-expclover)	37s
run-tests (3, FUND, -no-omp, -mpi, -expclover)	54s
run-tests (3, FUND, -no-omp, -mpi, -no-expclover)	53s
	8m 28s

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