[DRIVER] Add simulator, unify testcase to unittest (apache#25)

Makefile

@@ -40,6 +40,19 @@ ifneq ($(ADD_LDFLAGS), NONE)
 	LDFLAGS += $(ADD_LDFLAGS)
 endif
 
+UNAME_S := $(shell uname -s)
+
+ifeq ($(UNAME_S), Darwin)
+	SHARED_LIBRARY_SUFFIX := dylib
+	WHOLE_ARCH= -all_load
+	NO_WHOLE_ARCH= -noall_load
+	LDFLAGS += -undefined dynamic_lookup
+else
+	SHARED_LIBRARY_SUFFIX := so
+	WHOLE_ARCH= --whole-archive
+	NO_WHOLE_ARCH= --no-whole-archive
+endif
+
 
 all: lib/libvta.so lib/libvta_runtime.so
 
@@ -53,6 +66,10 @@ ifeq ($(TARGET), VTA_PYNQ_TARGET)
 	LDFLAGS += -l:libdma.so
 endif
 
+ifeq ($(TARGET), sim)
+	VTA_LIB_SRC += $(wildcard src/sim/*.cc)
+endif
+
 VTA_LIB_OBJ = $(patsubst src/%.cc, build/%.o, $(VTA_LIB_SRC))
 
 build/%.o: src/%.cc
@@ -71,7 +88,7 @@ lib/libvta_runtime.so: build/runtime.o
 lint: pylint cpplint
 
 cpplint:
-	python nnvm/dmlc-core/scripts/lint.py vta cpp include src hardware tests
+	python nnvm/dmlc-core/scripts/lint.py vta cpp include src
 
 pylint:
 	pylint python/vta --rcfile=$(ROOTDIR)/tests/lint/pylintrc
@@ -86,3 +103,4 @@ clean:
 -include build/*.d
 -include build/*/*.d
 -include build/*/*/*.d
+-include build/*/*/*/*.d

include/vta/driver.h

@@ -77,7 +77,7 @@ void VTAMemFree(void* buf);
  * \param buf Pointer to memory region allocated with VTAMemAlloc.
  * \return The physical address of the memory region.
  */
-vta_phy_addr_t VTAGetMemPhysAddr(void* buf);
+vta_phy_addr_t VTAMemGetPhyAddr(void* buf);
 
 /*!
  * \brief Flushes the region of memory out of the CPU cache to DRAM.

include/vta/hw_spec.h

@@ -519,8 +519,8 @@ typedef struct {
   uint64_t alu_opcode     : VTA_ALU_OPCODE_BIT_WIDTH;
   /*! \brief Use immediate is true */
   uint64_t use_imm        : 1;
-  /*! \brief Immediate value */
-  uint64_t imm            : VTA_ALUOP_IMM_BIT_WIDTH;
+  /*! \brief Immediate value: allow negative value */
+  int64_t imm            : VTA_ALUOP_IMM_BIT_WIDTH;
 } VTAAluInsn;
 
 /*! \brief VTA ALU instruction converter */

include/vta/runtime.h

@@ -196,7 +196,7 @@ void VTAUopPush(uint32_t mode,
                 uint32_t wgt_index,
                 uint32_t opcode,
                 uint32_t use_imm,
-                uint32_t imm_val);
+                int32_t imm_val);
 
 /*!
  * \brief Mark start of a micro op loop.

make/config.mk

@@ -27,7 +27,7 @@ ADD_LDFLAGS=
 ADD_CFLAGS=
 
 # the hardware target
-TARGET = VTA_PYNQ_TARGET
+TARGET = pynq
 
 #---------------------
 # VTA hardware parameters
@@ -89,7 +89,6 @@ VTA_OUT_BUFF_SIZE = $(shell echo "$$(( 1 << $(VTA_LOG_OUT_BUFF_SIZE) ))" )
 
 # Update ADD_CFLAGS
 ADD_CFLAGS += \
-	-D$(TARGET) \
 	-DVTA_LOG_WGT_WIDTH=$(VTA_LOG_WGT_WIDTH) -DVTA_LOG_INP_WIDTH=$(VTA_LOG_INP_WIDTH) \
 	-DVTA_LOG_ACC_WIDTH=$(VTA_LOG_ACC_WIDTH) -DVTA_LOG_OUT_WIDTH=$(VTA_LOG_OUT_WIDTH) \
 	-DVTA_LOG_BATCH=$(VTA_LOG_BATCH) \

python/vta/__init__.py

@@ -8,6 +8,7 @@
     from . import arm_conv2d, vta_conv2d
     from .build_module import build_config, lower, build
     from .rpc_client import reconfig_runtime, program_fpga
+
     from . import graph
 except ImportError:
     pass

python/vta/environment.py

@@ -89,7 +89,7 @@ class Environment(object):
     """
     current = None
     cfg_keys = [
-        "target",
+        "TARGET",
         "LOG_INP_WIDTH",
         "LOG_WGT_WIDTH",
         "LOG_ACC_WIDTH",
@@ -204,9 +204,19 @@ def gemm(self):
 
     @property
     def gevm(self):
-        """GEMM intrinsic"""
+        """GEVM intrinsic"""
         return self.dev.gevm
 
+    @property
+    def target_host(self):
+        """The target host"""
+        if self.TARGET == "pynq":
+            return "llvm -target=armv7-none-linux-gnueabihf"
+        elif self.TARGET == "sim":
+            return "llvm"
+        else:
+            raise ValueError("Unknown target %s" % self.TARGET)
+
 
 def get_env():
     """Get the current VTA Environment.
@@ -278,6 +288,7 @@ def _init_env():
 
     for k in Environment.cfg_keys:
         keys.add("VTA_" + k)
+    keys.add("TARGET")
 
     if not os.path.isfile(filename):
         raise RuntimeError(
@@ -290,8 +301,11 @@ def _init_env():
             for k in keys:
                 if k  +" =" in line:
                     val = line.split("=")[1].strip()
-                    cfg[k[4:]] = int(val)
-    cfg["target"] = "pynq"
+                    if k.startswith("VTA_"):
+                        k = k[4:]
+                        cfg[k] = int(val)
+                    else:
+                        cfg[k] = val
     return Environment(cfg)
 
 Environment.current = _init_env()

python/vta/ir_pass.py

@@ -78,8 +78,7 @@ def _visit(op):
             if not fail[0]:
                 begin = tvm.call_extern(
                     "int32", "VTAUopLoopBegin", stmt.extent, *gemm_offsets)
-                end = tvm.call_extern(
-                    "int32", "VTAUopLoopEnd", stmt.extent, *gemm_offsets)
+                end = tvm.call_extern("int32", "VTAUopLoopEnd")
                 return [begin, ret, end]
         raise ValueError("Failed to fold the GEMM instructions..")
 
@@ -683,8 +682,14 @@ def _flatten_loop(src_coeff, dst_coeff, extents):
                 else:
                     raise RuntimeError(
                         "Function call not recognized %s" % (loop_body.value.name))
+            elif isinstance(loop_body.value, tvm.expr.Load):
+                alu_opcode = env.dev.ALU_OPCODE_SHR
+                lhs = loop_body.value
+                rhs = tvm.const(0)
             else:
-                raise RuntimeError("Expression not recognized %s" % (type(loop_body.value)))
+                raise RuntimeError(
+                    "Expression not recognized %s, %s, %s" % (
+                        type(loop_body.value), str(loop_body.value), str(stmt)))
 
             # Derive array index coefficients
             dst_coeff = tvm.arith.DetectLinearEquation(dst_idx, indices)
@@ -772,7 +777,9 @@ def _flatten_loop(src_coeff, dst_coeff, extents):
             irb = tvm.ir_builder.create()
             for idx, extent in enumerate(extents):
                 irb.emit(tvm.call_extern(
-                    "int32", "VTAUopLoopBegin", extent, dst_coeff[idx], src_coeff[idx]))
+                    "int32", "VTAUopLoopBegin",
+                    extent, dst_coeff[idx], src_coeff[idx], 0))
+            use_imm = int(use_imm)
             irb.emit(tvm.call_extern(
                 "int32", "VTAUopPush",
                 1, 0,
@@ -804,5 +811,6 @@ def debug_print(stmt):
     stmt : Stmt
         The
     """
+    # pylint: disable=superfluous-parens
     print(stmt)
     return stmt

python/vta/rpc_client.py

@@ -24,8 +24,7 @@ def reconfig_runtime(remote):
             "VTA_LOG_WGT_BUFF_SIZE",
             "VTA_LOG_ACC_BUFF_SIZE",
             "VTA_LOG_OUT_BUFF_SIZE"]
-
-    cflags = ["-DVTA_%s_TARGET" % env.target.upper()]
+    cflags = []
     for k in keys:
         cflags += ["-D%s=%s" % (k, str(getattr(env, k[4:])))]
     freconfig = remote.get_function("tvm.contrib.vta.reconfig_runtime")

python/vta/testing/__init__.py

@@ -0,0 +1,3 @@
+"""Testing utilities, this namespace is not imported by default."""
+
+from . util import run

python/vta/testing/simulator.py

@@ -0,0 +1,51 @@
+"""Utilities to start simulator."""
+import os
+import ctypes
+import json
+import tvm
+
+def _load_lib():
+    """Load local library, assuming they are simulator."""
+    # pylint: disable=unused-variable
+    curr_path = os.path.dirname(os.path.abspath(os.path.expanduser(__file__)))
+    dll_path = [
+        os.path.abspath(os.path.join(curr_path, "../../../lib/libvta.so")),
+        os.path.abspath(os.path.join(curr_path, "../../../lib/libvta_runtime.so"))
+    ]
+    runtime_dll = []
+    if not all(os.path.exists(f) for f in dll_path):
+        return []
+    try:
+        for fname in dll_path:
+            runtime_dll.append(ctypes.CDLL(fname, ctypes.RTLD_GLOBAL))
+        return runtime_dll
+    except OSError:
+        return []
+
+
+def enabled():
+    """Check if simulator is enabled."""
+    f = tvm.get_global_func("vta.simulator.profiler_clear", True)
+    return f is not None
+
+
+def clear_stats():
+    """Clear profiler statistics"""
+    f = tvm.get_global_func("vta.simulator.profiler_clear", True)
+    if f:
+        f()
+
+
+def stats():
+    """Clear profiler statistics
+
+    Returns
+    -------
+    stats : dict
+        Current profiler statistics
+    """
+    x = tvm.get_global_func("vta.simulator.profiler_status")()
+    return json.loads(x)
+
+
+LIBS = _load_lib()

python/vta/testing/util.py

@@ -0,0 +1,30 @@
+"""Test Utilities"""
+from __future__ import absolute_import as _abs
+
+import os
+from tvm.contrib import rpc
+from ..environment import get_env
+from . import simulator
+
+
+def run(run_func):
+    """Run test function on all available env.
+
+    Parameters
+    ----------
+    run_func : function(env, remote)
+    """
+    env = get_env()
+    # run on simulator
+    if simulator.enabled():
+        env.TARGET = "sim"
+        run_func(env, rpc.LocalSession())
+
+    # Run on PYNQ if env variable exists
+    pynq_host = os.environ.get("VTA_PYNQ_RPC_HOST", None)
+    if pynq_host:
+        env.TARGET = "pynq"
+        port = os.environ.get("VTA_PYNQ_RPC_PORT", "9091")
+        port = int(port)
+        remote = rpc.connect(pynq_host, port)
+        run_func(env, remote)

src/data_buffer.h

@@ -57,7 +57,7 @@ struct DataBuffer {
     assert(data != nullptr);
     DataBuffer* buffer = new DataBuffer();
     buffer->data_ = data;
-    buffer->phy_addr_ = VTAGetMemPhysAddr(data);
+    buffer->phy_addr_ = VTAMemGetPhyAddr(data);
     return buffer;
   }
   /*!

src/pynq/pynq_driver.cc

@@ -1,6 +1,6 @@
 /*!
  *  Copyright (c) 2018 by Contributors
- * \file vta_pynq_driver.c
+ * \file pynq_driver.c
  * \brief VTA driver for Pynq board.
  */
 
@@ -17,7 +17,7 @@ void VTAMemFree(void* buf) {
   cma_free(buf);
 }
 
-vta_phy_addr_t VTAGetMemPhysAddr(void* buf) {
+vta_phy_addr_t VTAMemGetPhyAddr(void* buf) {
   return cma_get_phy_addr(buf);
 }
 

src/runtime.cc

@@ -11,6 +11,7 @@
 #include <vta/driver.h>
 #include <vta/hw_spec.h>
 #include <vta/runtime.h>
+#include <dmlc/logging.h>
 
 #include <cassert>
 #include <vector>
@@ -113,7 +114,7 @@ class UopKernel {
             uint32_t wgt_index,
             uint32_t opcode,
             uint32_t use_imm,
-            uint32_t imm_val) {
+            int32_t imm_val) {
     // The loop nest structure
     VerifyDep(dst_index);
     VTAUop op;
@@ -166,7 +167,7 @@ class UopKernel {
   uint32_t opcode_{0xFFFFFFFF};
   uint32_t reset_out_{0xFFFFFFFF};
   bool use_imm_{false};
-  uint16_t imm_val_{0};
+  int16_t imm_val_{0};
 
  private:
   // Verify that we don't write to the same acc_mem index two cycles in a row
@@ -195,10 +196,6 @@ class UopKernel {
 
 /*!
  * \brief Base class of all queues to send and recv serial data.
- * \param kElemBytes Element unit bytes.
- * \param kMaxBytes Maximum number of bytes.
- * \param kCoherent Whether we have coherent access to the buffer.
- * \param kAlwaysCache Wether we should use cached memory.
  */
 class BaseQueue {
  public:
@@ -227,7 +224,7 @@ class BaseQueue {
     dram_buffer_ = static_cast<char*>(VTAMemAlloc(
         max_bytes, coherent || always_cache_));
     assert(dram_buffer_ != nullptr);
-    dram_phy_addr_ = VTAGetMemPhysAddr(dram_buffer_);
+    dram_phy_addr_ = VTAMemGetPhyAddr(dram_buffer_);
   }
   /*!
    * \brief Reset the pointer of the buffer.
@@ -597,14 +594,14 @@ class InsnQueue : public BaseQueue {
         }
         // Print instruction field information
         if (c.mem.opcode == VTA_OPCODE_LOAD) {
-            printf("LOAD ");
-            if (c.mem.memory_type == VTA_MEM_ID_UOP) printf("UOP\n");
-            if (c.mem.memory_type == VTA_MEM_ID_WGT) printf("WGT\n");
-            if (c.mem.memory_type == VTA_MEM_ID_INP) printf("INP\n");
-            if (c.mem.memory_type == VTA_MEM_ID_ACC) printf("ACC\n");
+          printf("LOAD ");
+          if (c.mem.memory_type == VTA_MEM_ID_UOP) printf("UOP\n");
+          if (c.mem.memory_type == VTA_MEM_ID_WGT) printf("WGT\n");
+          if (c.mem.memory_type == VTA_MEM_ID_INP) printf("INP\n");
+          if (c.mem.memory_type == VTA_MEM_ID_ACC) printf("ACC\n");
         }
         if (c.mem.opcode == VTA_OPCODE_STORE) {
-            printf("STORE\n");
+          printf("STORE:\n");
         }
         printf("\tdep - pop prev: %d, pop next: %d, push prev: %d, push next: %d\n",
                static_cast<int>(c.mem.pop_prev_dep),
@@ -1210,7 +1207,7 @@ void VTAUopPush(uint32_t mode,
                 uint32_t wgt_index,
                 uint32_t opcode,
                 uint32_t use_imm,
-                uint32_t imm_val) {
+                int32_t imm_val) {
   vta::CommandQueue::ThreadLocal()->record_kernel()
       ->Push(mode, reset_out, dst_index, src_index,
              wgt_index, opcode, use_imm, imm_val);