test

Additional comments and changed variable names in heat equation example #1074

Job	Run time
lint	7s
id_repo	1s
docker-build (oldest, cpu)	30m 48s
docker-build (oldest, hip)	1h 0m 19s
docker-build (latest, cpu)	26m 43s
docker-build (latest, cuda)	50m 31s
docker-build (latest, hip)	57m 16s
clang-tidy-test	4m 45s
test (oldest, cpu-gcc, 17, Debug)	4m 23s
test (oldest, cpu-gcc, 17, Release)	4m 25s
test (oldest, cpu-gcc, 20, Debug)	4m 33s
test (oldest, cpu-gcc, 20, Release)	4m 35s
test (oldest, cpu-clang, 17, Debug)	3m 12s
test (oldest, cpu-clang, 17, Release)	3m 52s
test (oldest, hip, 17, Debug)	12m 14s
test (oldest, hip, 17, Release)	11m 5s
test (oldest, hip, 20, Debug)	13m 10s
test (oldest, hip, 20, Release)	11m 2s
test (latest, cpu-gcc, 17, Debug)	4m 3s
test (latest, cpu-gcc, 17, Release)	4m 55s
test (latest, cpu-gcc, 20, Debug)	5m 26s
test (latest, cpu-gcc, 20, Release)	4m 7s
test (latest, cpu-gcc, 23, Debug)	4m 37s
test (latest, cpu-gcc, 23, Release)	4m 49s
test (latest, cpu-clang, 17, Debug)	3m 14s
test (latest, cpu-clang, 17, Release)	3m 48s
test (latest, cpu-clang, 20, Debug)	3m 37s
test (latest, cpu-clang, 20, Release)	5m 27s
test (latest, cpu-clang, 23, Debug)	4m 51s
test (latest, cpu-clang, 23, Release)	4m 16s
test (latest, cuda, 17, Debug)	11m 26s
test (latest, cuda, 17, Release)	13m 15s
test (latest, hip, 17, Debug)	12m 10s
test (latest, hip, 17, Release)	10m 53s
test (latest, hip, 20, Debug)	12m 37s
test (latest, hip, 20, Release)	11m 26s
test (latest, hip, 23, Debug)	12m 35s
test (latest, hip, 23, Release)	12m 57s
	7h 33m 30s

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