adds GPU support for PML in elastic domains

[codecov[bot]]

Codecov Report

Patch coverage: 84.44% and project coverage change: +22.90 :tada:

Comparison is base (a73ce9d) 25.49% compared to head (1531b76) 48.39%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## devel #1618 +/- ## =========================================== + Coverage 25.49% 48.39% +22.90% =========================================== Files 232 266 +34 Lines 49464 60094 +10630 =========================================== + Hits 12609 29083 +16474 + Misses 36855 31011 -5844 ``` | [Impacted Files](https://app.codecov.io/gh/SPECFEM/specfem3d/pull/1618?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM) | Coverage Δ | | |---|---|---| | [src/generate\_databases/save\_arrays\_solver\_hdf5.F90](https://app.codecov.io/gh/SPECFEM/specfem3d/pull/1618?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM#diff-c3JjL2dlbmVyYXRlX2RhdGFiYXNlcy9zYXZlX2FycmF5c19zb2x2ZXJfaGRmNS5GOTA=) | `0.00% <ø> (ø)` | | | [src/gpu/specfem3D\_gpu\_cuda\_method\_stubs.c](https://app.codecov.io/gh/SPECFEM/specfem3d/pull/1618?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM#diff-c3JjL2dwdS9zcGVjZmVtM0RfZ3B1X2N1ZGFfbWV0aG9kX3N0dWJzLmM=) | `0.00% <0.00%> (ø)` | | | [src/specfem3D/compute\_forces\_acoustic.F90](https://app.codecov.io/gh/SPECFEM/specfem3d/pull/1618?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM#diff-c3JjL3NwZWNmZW0zRC9jb21wdXRlX2ZvcmNlc19hY291c3RpYy5GOTA=) | `100.00% <ø> (+64.33%)` | :arrow_up: | | [src/specfem3D/iterate\_time\_undoatt.F90](https://app.codecov.io/gh/SPECFEM/specfem3d/pull/1618?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM#diff-c3JjL3NwZWNmZW0zRC9pdGVyYXRlX3RpbWVfdW5kb2F0dC5GOTA=) | `0.00% <ø> (ø)` | | | [src/specfem3D/prepare\_gpu.f90](https://app.codecov.io/gh/SPECFEM/specfem3d/pull/1618?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM#diff-c3JjL3NwZWNmZW0zRC9wcmVwYXJlX2dwdS5mOTA=) | `0.00% <0.00%> (ø)` | | | [...hy/postprocess\_sensitivity\_kernels/combine\_sem.f90](https://app.codecov.io/gh/SPECFEM/specfem3d/pull/1618?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM#diff-c3JjL3RvbW9ncmFwaHkvcG9zdHByb2Nlc3Nfc2Vuc2l0aXZpdHlfa2VybmVscy9jb21iaW5lX3NlbS5mOTA=) | `0.00% <ø> (ø)` | | | [src/tomography/sum\_kernels.f90](https://app.codecov.io/gh/SPECFEM/specfem3d/pull/1618?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM#diff-c3JjL3RvbW9ncmFwaHkvc3VtX2tlcm5lbHMuZjkw) | `0.00% <ø> (ø)` | | | [src/tomography/sum\_preconditioned\_kernels.f90](https://app.codecov.io/gh/SPECFEM/specfem3d/pull/1618?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM#diff-c3JjL3RvbW9ncmFwaHkvc3VtX3ByZWNvbmRpdGlvbmVkX2tlcm5lbHMuZjkw) | `0.00% <ø> (ø)` | | | [...3D/compute\_forces\_viscoelastic\_calling\_routine.F90](https://app.codecov.io/gh/SPECFEM/specfem3d/pull/1618?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM#diff-c3JjL3NwZWNmZW0zRC9jb21wdXRlX2ZvcmNlc192aXNjb2VsYXN0aWNfY2FsbGluZ19yb3V0aW5lLkY5MA==) | `45.61% <40.00%> (+25.07%)` | :arrow_up: | | [src/specfem3D/compute\_coupling\_viscoelastic\_ac.f90](https://app.codecov.io/gh/SPECFEM/specfem3d/pull/1618?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM#diff-c3JjL3NwZWNmZW0zRC9jb21wdXRlX2NvdXBsaW5nX3Zpc2NvZWxhc3RpY19hYy5mOTA=) | `66.27% <50.00%> (+36.04%)` | :arrow_up: | | ... and [9 more](https://app.codecov.io/gh/SPECFEM/specfem3d/pull/1618?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM) | | ... and [153 files with indirect coverage changes](https://app.codecov.io/gh/SPECFEM/specfem3d/pull/1618/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM)

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