Hipify Pulsar for PyTorch3D

Summary:
- Hipified Pytorch Pulsar
   - Created separate target for Pulsar tests and enabled RE testing
   - Pytorch3D full test suite requires additional work like fixing EGL
     dependencies on AMD

Reviewed By: danzimm

Differential Revision: D61339912

fbshipit-source-id: 0d10bc966e4de4a959f3834a386bad24e449dc1f

pytorch3d/csrc/ext.cpp

@@ -7,15 +7,11 @@
  */
 
 // clang-format off
-#if !defined(USE_ROCM)
 #include "./pulsar/global.h" // Include before <torch/extension.h>.
-#endif
 #include <torch/extension.h>
 // clang-format on
-#if !defined(USE_ROCM)
 #include "./pulsar/pytorch/renderer.h"
 #include "./pulsar/pytorch/tensor_util.h"
-#endif
 #include "ball_query/ball_query.h"
 #include "blending/sigmoid_alpha_blend.h"
 #include "compositing/alpha_composite.h"
@@ -104,7 +100,6 @@ PYBIND11_MODULE(TORCH_EXTENSION_NAME, m) {
 
   // Pulsar.
   // Pulsar not enabled on AMD.
-#if !defined(USE_ROCM)
 #ifdef PULSAR_LOGGING_ENABLED
   c10::ShowLogInfoToStderr();
 #endif
@@ -189,5 +184,4 @@ PYBIND11_MODULE(TORCH_EXTENSION_NAME, m) {
   m.attr("MAX_UINT") = py::int_(MAX_UINT);
   m.attr("MAX_USHORT") = py::int_(MAX_USHORT);
   m.attr("PULSAR_MAX_GRAD_SPHERES") = py::int_(MAX_GRAD_SPHERES);
-#endif
 }

pytorch3d/csrc/pulsar/global.h

@@ -36,11 +36,13 @@
 #pragma nv_diag_suppress 2951
 #pragma nv_diag_suppress 2967
 #else
+#if !defined(USE_ROCM)
 #pragma diag_suppress = attribute_not_allowed
 #pragma diag_suppress = 1866
 #pragma diag_suppress = 2941
 #pragma diag_suppress = 2951
 #pragma diag_suppress = 2967
+#endif //! USE_ROCM
 #endif
 #else // __CUDACC__
 #define INLINE inline
@@ -56,7 +58,9 @@
 #pragma clang diagnostic pop
 #ifdef WITH_CUDA
 #include <ATen/cuda/CUDAContext.h>
+#if !defined(USE_ROCM)
 #include <vector_functions.h>
+#endif //! USE_ROCM
 #else
 #ifndef cudaStream_t
 typedef void* cudaStream_t;

pytorch3d/csrc/pulsar/gpu/commands.h

@@ -59,6 +59,11 @@ getLastCudaError(const char* errorMessage, const char* file, const int line) {
 #define SHARED __shared__
 #define ACTIVEMASK() __activemask()
 #define BALLOT(mask, val) __ballot_sync((mask), val)
+
+/* TODO (ROCM-6.2): None of the WARP_* are used anywhere and ROCM-6.2 natively
+ * supports __shfl_*. Disabling until the move to ROCM-6.2.
+ */
+#if !defined(USE_ROCM)
 /**
  * Find the cumulative sum within a warp up to the current
  * thread lane, with each mask thread contributing base.
@@ -115,6 +120,7 @@ INLINE DEVICE float3 WARP_SUM_FLOAT3(
   ret.z = WARP_SUM(group, mask, base.z);
   return ret;
 }
+#endif //! USE_ROCM
 
 // Floating point.
 // #define FMUL(a, b) __fmul_rn((a), (b))
@@ -142,6 +148,7 @@ INLINE DEVICE float3 WARP_SUM_FLOAT3(
 #define FMA(x, y, z) __fmaf_rn((x), (y), (z))
 #define I2F(a) __int2float_rn(a)
 #define FRCP(x) __frcp_rn(x)
+#if !defined(USE_ROCM)
 __device__ static float atomicMax(float* address, float val) {
   int* address_as_i = (int*)address;
   int old = *address_as_i, assumed;
@@ -166,6 +173,7 @@ __device__ static float atomicMin(float* address, float val) {
   } while (assumed != old);
   return __int_as_float(old);
 }
+#endif //! USE_ROCM
 #define DMAX(a, b) FMAX(a, b)
 #define DMIN(a, b) FMIN(a, b)
 #define DSQRT(a) sqrt(a)

pytorch3d/csrc/pulsar/include/camera.device.h

@@ -14,7 +14,7 @@
 #include "./commands.h"
 
 namespace pulsar {
-IHD CamGradInfo::CamGradInfo() {
+IHD CamGradInfo::CamGradInfo(int x) {
   cam_pos = make_float3(0.f, 0.f, 0.f);
   pixel_0_0_center = make_float3(0.f, 0.f, 0.f);
   pixel_dir_x = make_float3(0.f, 0.f, 0.f);

pytorch3d/csrc/pulsar/include/camera.h

@@ -63,7 +63,7 @@ inline bool operator==(const CamInfo& a, const CamInfo& b) {
 };
 
 struct CamGradInfo {
-  HOST DEVICE CamGradInfo();
+  HOST DEVICE CamGradInfo(int = 0);
   float3 cam_pos;
   float3 pixel_0_0_center;
   float3 pixel_dir_x;

pytorch3d/csrc/pulsar/include/commands.h

@@ -24,7 +24,7 @@
 // #pragma diag_suppress = 68
 #include <ATen/cuda/CUDAContext.h>
 // #pragma pop
-#include "../cuda/commands.h"
+#include "../gpu/commands.h"
 #else
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Weverything"

pytorch3d/csrc/pulsar/include/math.h

@@ -46,6 +46,7 @@ IHD float3 outer_product_sum(const float3& a) {
 }
 
 // TODO: put intrinsics here.
+#if !defined(USE_ROCM)
 IHD float3 operator+(const float3& a, const float3& b) {
   return make_float3(a.x + b.x, a.y + b.y, a.z + b.z);
 }
@@ -93,6 +94,7 @@ IHD float3 operator*(const float3& a, const float3& b) {
 IHD float3 operator*(const float& a, const float3& b) {
   return b * a;
 }
+#endif //! USE_ROCM
 
 INLINE DEVICE float length(const float3& v) {
   // TODO: benchmark what's faster.

pytorch3d/csrc/pulsar/include/renderer.render.device.h

@@ -283,9 +283,15 @@ GLOBAL void render(
           (percent_allowed_difference > 0.f &&
            max_closest_possible_intersection > depth_threshold) ||
           tracker.get_n_hits() >= max_n_hits;
+#if defined(__CUDACC__) && defined(__HIP_PLATFORM_AMD__)
+      unsigned long long warp_done = __ballot(done);
+      int warp_done_bit_cnt = __popcll(warp_done);
+#else
       uint warp_done = thread_warp.ballot(done);
+      int warp_done_bit_cnt = POPC(warp_done);
+#endif //__CUDACC__ && __HIP_PLATFORM_AMD__
       if (thread_warp.thread_rank() == 0)
-        ATOMICADD_B(&n_pixels_done, POPC(warp_done));
+        ATOMICADD_B(&n_pixels_done, warp_done_bit_cnt);
       // This sync is necessary to keep n_loaded until all threads are done with
       // painting.
       thread_block.sync();

pytorch3d/renderer/__init__.py

@@ -76,13 +76,9 @@ from .points import (
     PointsRasterizationSettings,
     PointsRasterizer,
     PointsRenderer,
+    PulsarPointsRenderer,
     rasterize_points,
 )
-
-# Pulsar is not enabled on amd.
-if not torch.version.hip:
-    from .points import PulsarPointsRenderer
-
 from .splatter_blend import SplatterBlender
 from .utils import (
     convert_to_tensors_and_broadcast,

pytorch3d/renderer/points/__init__.py

@@ -10,9 +10,7 @@ import torch
 
 from .compositor import AlphaCompositor, NormWeightedCompositor
 
-# Pulsar not enabled on amd.
+from .pulsar.unified import PulsarPointsRenderer
-if not torch.version.hip:
-    from .pulsar.unified import PulsarPointsRenderer
 
 from .rasterize_points import rasterize_points
 from .rasterizer import PointsRasterizationSettings, PointsRasterizer