ascent slices do not work on GPU (likely ascent bug)

[BenWibking]

The Ascent outputs do not work on GPU for the precipitator pgen. It works fine on host runs.

On GPU runs, we instead get:

s1/p1 pseudocolor plot yielded no data, i.e., no cells remains2/p1 pseudocolor plot yielded no data, i.e., no cells remaincycle=1465 time=2.6308698410348811e+03 dt=1.7657586286923035e+00 zone-cycles/wsec_step=4.56e+05 wsec_total=1.23e+03 wsec_step=1.15e+00

and

[BenWibking]

This works:

-
  action: "add_scenes"
  scenes:
    s1:
      plots:
        p1:
          type: "pseudocolor"
          field: "Density"
          color_table:
            name: "Viridis"
      renders:
        r1:
          image_prefix: "dens%05d"
          annotations: "true"
          camera:
            look_at: [0.0, 0.0, 0.0]
            position: [0.0, -200.0, 0.0]
            up: [0.0, 0.0, 1.0]

while this does not:

-
  action: "add_pipelines"
  pipelines:
    pl1:
      f2:
        type: "slice"
        params:
          point:
            x: 0.0
            y: 0.0
            z: 0.0
          normal:
            x: 0.0
            y: 1.0
            z: 0.0
-
  action: "add_scenes"
  scenes:
    s1:
      plots:
        p1:
          type: "pseudocolor"
          field: "Density"
          pipeline: "pl1"
          color_table:
            name: "Viridis"
      renders:
        r1:
          image_prefix: "dens%05d"
          annotations: "true"
          camera:
            look_at: [0.0, 0.0, 0.0]
            position: [0.0, -200.0, 0.0]
            up: [0.0, 0.0, 1.0]

[BenWibking]

The mesh is

<parthenon/mesh>
refinement  = static
nghost = 4

nx1        = 256       # Number of zones in X1-direction
x1min      = -50.       # minimum value of X1
x1max      = 50.0       # maximum value of X1
ix1_bc     = periodic   # inner-X1 boundary flag
ox1_bc     = periodic   # outer-X1 boundary flag

nx2        = 256       # Number of zones in X2-direction
x2min      = -50.0       # minimum value of X2
x2max      = 50.0       # maximum value of X2
ix2_bc     = periodic   # inner-X2 boundary flag
ox2_bc     = periodic   # outer-X2 boundary flag

nx3        = 512       # Number of zones in X3-direction
x3min      = -100.       # minimum value of X3
x3max      = 100.       # maximum value of X3
ix3_bc     = user   # inner-X3 boundary flag
ox3_bc     = user   # outer-X3 boundary flag

[BenWibking]

I've opened an Ascent issue here: Alpine-DAV/ascent#1119

[BenWibking]

Fixed in VTKm-2.1rc2.