[math] Add taichi customized operators (event csrmv, csrmv, jitconn e…

…vent mv, jitconn mv) (#553)

* Add _csr_matvec_taichi.py

* Test event csr matvec using taichi custom op

* Update _csr_matvec_taichi.py

* Add sparse csr matvec using taichi customized op

* Test event csr matvec using taichi customized op

* Implement autograd of event csr matvec using taichi customized op

* Update test of `test_event_csrmv_taichi.py`

* Update _csr_mv_taichi.py

* Test sparse csr matvec using taichi customized op

* Update test_csrmv_taichi.py

* Remove test event and sparse csrmv using taichi from pytest

* Fix autograd bug and update test_csrmv_taichi.py

* Fix autograd bug and update `test_event_csr_matvec_taichi.py`

* Fix event csr matvec kernel bug

* Fix test bugs

* Add taichi.func random generators

* Update `test_taichi_random.py`

* Implement `mv_prob_homo_taichi` and `mv_prob_uniform_taichi`

* Implement jitconn matvec using taichi customized op` and Need to test

* Fix bugs in

* Remove pytest in 'test_taichi_random.py'

* Implement jitconn event matvec using taichi customized op and Need to test

* Implement lfsr88 random generator algorithm

* Refactor `jitconn/_matvec_taichi.py` with lfsr88 random generator

* [csrmv taichi] format codes and redefine JVP rules using `.defjvp` interface

* [csrmv taichi] format codes of `brainpy.math.sparse.csrmv` and redefine JVP rules using `.defjvp` interface

* [math] depress taichi import logging by forcing using `import_taichi()` utility, move taichi random functions into another file

* fix missing file

* Optimize event csr matvec with taichi customized op and Add taichi event csr matvec benchmark

* Update event_csrmv_taichi_VS_event_csrmv.py

* Optimize csr matvec with taichi customized op and Add taichi csr matvec benchmark

* Fix bugs

* Add more benchmarks

* Update benchmarks

* Optimized taichi event csr matvec gpu

* Update benchmarks

* Update benchmarks

* Update benchmarks

* Update benchmarks

* Optimized taichi customized cpu kernels about event csr matvec and csr matvec

* Add taichi jitconn matvec benchmark and Optimize taichi jitconn matvec op

* Refactor taichi event matvec op

* Add taichi jitconn event matvec benchmark

* Optimize taichi jitconn matvec op on CPU backend

* Update taichi jitconn matvec op

* Update test files for taichi jitconn op

* Update taichi random generator

* Fix bugs

* Add new function for taichi random seeds initialization

* Update taichi_random_time_test.py

* Update taichi_random_time_test.py

* Update taichi_random_time_test.py

* Fix bugs

* Remove taichi_random_time_test.py

* Update test_taichi_random.py

* [event csr taichi] small upgrade

* [csr mv taichi] fix bugs

* [math] new module `brainpy.math.tifunc` for taichi functionality

* [math] move default environment setting into `defaults.py`

* [math] fix and update taichi jitconn operators

---------

Co-authored-by: chaoming <adaduo@outlook.com>

brainpy/_src/dependency_check.py

@@ -17,7 +17,7 @@
 
 taichi_install_info = (f'We need taichi=={_minimal_taichi_version}. '
                        f'Currently you can install taichi=={_minimal_taichi_version} through:\n\n'
-                       '> pip install taichi==1.7.0 -U')
+                       '> pip install taichi==1.7.0')
 os.environ["TI_LOG_LEVEL"] = "error"
 
 

brainpy/_src/deprecations.py

@@ -61,14 +61,18 @@ def new_func(*args, **kwargs):
   return new_func
 
 
-def deprecation_getattr(module, deprecations):
+def deprecation_getattr(module, deprecations, redirects=None):
+  redirects = redirects or {}
+
   def getattr(name):
     if name in deprecations:
       message, fn = deprecations[name]
       if fn is None:
         raise AttributeError(message)
       _deprecate(message)
       return fn
+    if name in redirects:
+      return redirects[name]
     raise AttributeError(f"module {module!r} has no attribute {name!r}")
 
   return getattr

brainpy/_src/math/__init__.py

@@ -44,7 +44,7 @@
 from .compat_numpy import *
 from .compat_tensorflow import *
 from .others import *
-from . import random, linalg, fft
+from . import random, linalg, fft, tifunc
 
 # operators
 from .op_register import *

brainpy/_src/math/defaults.py

@@ -0,0 +1,48 @@
+import jax.numpy as jnp
+from jax import config
+
+from brainpy._src.dependency_check import import_taichi
+from .modes import NonBatchingMode
+from .scales import IdScaling
+
+__all__ = ['mode', 'membrane_scaling', 'dt', 'bool_', 'int_', 'ti_int', 'float_', 'ti_float', 'complex_']
+
+ti = import_taichi()
+
+# Default computation mode.
+mode = NonBatchingMode()
+
+# '''Default computation mode.'''
+membrane_scaling = IdScaling()
+
+# '''Default time step.'''
+dt = 0.1
+
+# '''Default bool data type.'''
+bool_ = jnp.bool_
+
+# '''Default integer data type.'''
+int_ = jnp.int64 if config.read('jax_enable_x64') else jnp.int32
+
+# '''Default integer data type in Taichi.'''
+ti_int = ti.int64 if config.read('jax_enable_x64') else ti.int32
+
+# '''Default float data type.'''
+float_ = jnp.float64 if config.read('jax_enable_x64') else jnp.float32
+
+# '''Default float data type in Taichi.'''
+ti_float = ti.float64 if config.read('jax_enable_x64') else ti.float32
+
+# '''Default complex data type.'''
+complex_ = jnp.complex128 if config.read('jax_enable_x64') else jnp.complex64
+
+# redirects
+redirects = {'mode': mode,
+             'membrane_scaling': membrane_scaling,
+             'dt': dt,
+             'bool_': bool_,
+             'int_': int_,
+             'ti_int': ti_int,
+             'float_': float_,
+             'ti_float': ti_float,
+             'complex_': complex_}

brainpy/_src/math/environment.py

@@ -15,8 +15,10 @@
 
 from . import modes
 from . import scales
+from . import defaults
+from brainpy._src.dependency_check import import_taichi
 
-bm = None
+ti = import_taichi()
 
 __all__ = [
   # context manage for environment setting
@@ -389,9 +391,7 @@ def ditype():
   """
   # raise errors.NoLongerSupportError('\nGet default integer data type through `ditype()` has been deprecated. \n'
   #                                   'Use `brainpy.math.int_` instead.')
-  global bm
-  if bm is None: from brainpy import math as bm
-  return bm.int_
+  return defaults.int_
 
 
 def dftype():
@@ -403,9 +403,7 @@ def dftype():
 
   # raise errors.NoLongerSupportError('\nGet default floating data type through `dftype()` has been deprecated. \n'
   #                                   'Use `brainpy.math.float_` instead.')
-  global bm
-  if bm is None: from brainpy import math as bm
-  return bm.float_
+  return defaults.float_
 
 
 def set_float(dtype: type):
@@ -416,11 +414,17 @@ def set_float(dtype: type):
   dtype: type
     The float type.
   """
-  if dtype not in [jnp.float16, jnp.float32, jnp.float64, ]:
-    raise TypeError(f'Float data type {dtype} is not supported.')
-  global bm
-  if bm is None: from brainpy import math as bm
-  bm.__dict__['float_'] = dtype
+  if dtype in [jnp.float16, 'float16', 'f16']:
+    defaults.__dict__['float_'] = jnp.float16
+    defaults.__dict__['ti_float'] = ti.float16
+  elif dtype in [jnp.float32, 'float32', 'f32']:
+    defaults.__dict__['float_'] = jnp.float32
+    defaults.__dict__['ti_float'] = ti.float32
+  elif dtype in [jnp.float64, 'float64', 'f64']:
+    defaults.__dict__['float_'] = jnp.float64
+    defaults.__dict__['ti_float'] = ti.float64
+  else:
+    raise NotImplementedError
 
 
 def get_float():
@@ -431,9 +435,7 @@ def get_float():
   dftype: type
     The default float data type.
   """
-  global bm
-  if bm is None: from brainpy import math as bm
-  return bm.float_
+  return defaults.float_
 
 
 def set_int(dtype: type):
@@ -444,12 +446,20 @@ def set_int(dtype: type):
   dtype: type
     The integer type.
   """
-  if dtype not in [jnp.int8, jnp.int16, jnp.int32, jnp.int64,
-                   jnp.uint8, jnp.uint16, jnp.uint32, jnp.uint64, ]:
-    raise TypeError(f'Integer data type {dtype} is not supported.')
-  global bm
-  if bm is None: from brainpy import math as bm
-  bm.__dict__['int_'] = dtype
+  if dtype in [jnp.int8, 'int8', 'i8']:
+    defaults.__dict__['int_'] = jnp.int8
+    defaults.__dict__['ti_int'] = ti.int8
+  elif dtype in [jnp.int16, 'int16', 'i16']:
+    defaults.__dict__['int_'] = jnp.int16
+    defaults.__dict__['ti_int'] = ti.int16
+  elif dtype in [jnp.int32, 'int32', 'i32']:
+    defaults.__dict__['int_'] = jnp.int32
+    defaults.__dict__['ti_int'] = ti.int32
+  elif dtype in [jnp.int64, 'int64', 'i64']:
+    defaults.__dict__['int_'] = jnp.int64
+    defaults.__dict__['ti_int'] = ti.int64
+  else:
+    raise NotImplementedError
 
 
 def get_int():
@@ -460,9 +470,7 @@ def get_int():
   dftype: type
     The default int data type.
   """
-  global bm
-  if bm is None: from brainpy import math as bm
-  return bm.int_
+  return defaults.int_
 
 
 def set_bool(dtype: type):
@@ -473,9 +481,7 @@ def set_bool(dtype: type):
   dtype: type
     The bool type.
   """
-  global bm
-  if bm is None: from brainpy import math as bm
-  bm.__dict__['bool_'] = dtype
+  defaults.__dict__['bool_'] = dtype
 
 
 def get_bool():
@@ -486,9 +492,7 @@ def get_bool():
   dftype: type
     The default bool data type.
   """
-  global bm
-  if bm is None: from brainpy import math as bm
-  return bm.bool_
+  return defaults.bool_
 
 
 def set_complex(dtype: type):
@@ -499,9 +503,7 @@ def set_complex(dtype: type):
   dtype: type
     The complex type.
   """
-  global bm
-  if bm is None: from brainpy import math as bm
-  bm.__dict__['complex_'] = dtype
+  defaults.__dict__['complex_'] = dtype
 
 
 def get_complex():
@@ -512,9 +514,7 @@ def get_complex():
   dftype: type
     The default complex data type.
   """
-  global bm
-  if bm is None: from brainpy import math as bm
-  return bm.complex_
+  return defaults.complex_
 
 
 # numerical precision
@@ -529,9 +529,7 @@ def set_dt(dt):
       Numerical integration precision.
   """
   assert isinstance(dt, float), f'"dt" must a float, but we got {dt}'
-  global bm
-  if bm is None: from brainpy import math as bm
-  bm.__dict__['dt'] = dt
+  defaults.__dict__['dt'] = dt
 
 
 def get_dt():
@@ -542,9 +540,7 @@ def get_dt():
   dt : float
       Numerical integration precision.
   """
-  global bm
-  if bm is None: from brainpy import math as bm
-  return bm.dt
+  return defaults.dt
 
 
 def set_mode(mode: modes.Mode):
@@ -558,9 +554,7 @@ def set_mode(mode: modes.Mode):
   if not isinstance(mode, modes.Mode):
     raise TypeError(f'Must be instance of brainpy.math.Mode. '
                     f'But we got {type(mode)}: {mode}')
-  global bm
-  if bm is None: from brainpy import math as bm
-  bm.__dict__['mode'] = mode
+  defaults.__dict__['mode'] = mode
 
 
 def get_mode() -> modes.Mode:
@@ -571,9 +565,7 @@ def get_mode() -> modes.Mode:
   mode: Mode
     The default computing mode.
   """
-  global bm
-  if bm is None: from brainpy import math as bm
-  return bm.mode
+  return defaults.mode
 
 
 def set_membrane_scaling(membrane_scaling: scales.Scaling):
@@ -587,9 +579,7 @@ def set_membrane_scaling(membrane_scaling: scales.Scaling):
   if not isinstance(membrane_scaling, scales.Scaling):
     raise TypeError(f'Must be instance of brainpy.math.Scaling. '
                     f'But we got {type(membrane_scaling)}: {membrane_scaling}')
-  global bm
-  if bm is None: from brainpy import math as bm
-  bm.__dict__['membrane_scaling'] = membrane_scaling
+  defaults.__dict__['membrane_scaling'] = membrane_scaling
 
 
 def get_membrane_scaling() -> scales.Scaling:
@@ -600,9 +590,7 @@ def get_membrane_scaling() -> scales.Scaling:
   membrane_scaling: Scaling
     The default computing membrane_scaling.
   """
-  global bm
-  if bm is None: from brainpy import math as bm
-  return bm.membrane_scaling
+  return defaults.membrane_scaling
 
 
 def enable_x64(x64=None):

brainpy/_src/math/event/__init__.py

@@ -1,4 +1,5 @@
 
 from ._info_collection import *
 from ._csr_matvec import *
+from ._csr_matvec_taichi import *