chroma - Chroma is a high performance optical photon simulation for particle physics detectors

Age	Commit message (Collapse)	Author
2011-08-16	Remove some unused parts of generator/photon.py	Stan Seibert

2011-08-16	merge	Anthony LaTorre

2011-08-16	update geometry.py() documentation	Anthony LaTorre

2011-08-16	Minor fixes to simulation. Default to 11 bit mode, fix print statement.	Stan Seibert

2011-08-16	Preheat GEANT4 process by running a short event at startup	Stan Seibert

2011-08-16	Inexplicable syntax error sitting in our package __init__.py	Stan Seibert

2011-08-16	update documentation for tools.py	Anthony LaTorre

2011-08-16	add document\ation to stl.py.	Anthony LaTorre

2011-08-16	cleanup and add documentation to pi0.py	Anthony LaTorre

2011-08-16	merge	Stan Seibert

2011-08-16	Refactor sim.py into a reusable Simulation class that is called by the	Stan Seibert
	main function(). Also cleanup more event data structure names and add an nphoton value that is preserved even if you prune off all the actual photon vertices.
2011-08-16	merge	Anthony LaTorre

2011-08-16	add linear_extrude() function to make.py. rotate_extrude() now takes the ↵	Anthony LaTorre
	number of rotational steps to extrude instead of the angle step size. updated documention in make.py.
2011-08-16	Seed the numpy random number generator.	Stan Seibert

2011-08-16	Move general utility functions out of sim.py into tools.	Stan Seibert
	The enable_debug_on_crash() function sets the exception hook to start up PDB on uncaught exceptions The @profile_if_possible decorator applies the kernprof.py @profile decorator if available (because of profiling in progress), otherwise does nothing.
2011-08-16	Merge	Stan Seibert

2011-08-16	Epic restructuring of code to switch to a generator-based style of	Stan Seibert
	event creation. Now we have vertex generators (that produce initial particles), photon generators (that create photons to propagate), and a standard data structure using Python class containers and numpy arrays to hand around the code. Also cleaned up some naming of things before they become conventions.
2011-08-16	Draw hits with charge rather than time.	Stan Seibert

2011-08-15	merge	Anthony LaTorre

2011-08-15	woops. dot product should be clamped to [-1.0,1.0].	Anthony LaTorre

2011-08-15	special camera mode	Stan Seibert

2011-08-15	fix nan bug by clamping dot() of surface normal and -photon direction to ↵	Anthony LaTorre
	[0.0,1.0]
2011-08-14	Rewrite the color_solid function in gpu.GPU (and associated CUDA code)	Stan Seibert
	to make it 100x faster. Instead of having each CUDA thread loop over the full triangle list, we give each thread a single triangle and ask it to look up the hit status and color for that triangle. The hit array and color array are small enough (approx 30,000 entries) to fit into the cache, so this goes much faster. Now the event viewer is quite snappy!
2011-08-14	Add a helper function to the ROOT Channel class that will populate 3	Stan Seibert
	arrays with hit information: hit or not, time and charge. Handy for fetching all the hits in an event into numpy arrays.
2011-08-14	Oops, view.py is still in use.	Stan Seibert

2011-08-13	Remove unused render and view files. They have both been superceded by ↵	Stan Seibert
	camera.py.
2011-08-13	A faulty optical process can make the position or direction of the	Stan Seibert
	photon into NaN on the GPU. Now we abort these photons rather than let them lock up the intersect_mesh() method. There is a new history bit (#31) that indicates when a NAN_ABORT has occurred, and this bit is checked for by GPU.propagate(). If set for any of the photons, a warning message is printed. While not as good as preventing the NaN problem in the first place, this at least ensures we are aware of the problem.
2011-08-13	For consistency, we should keep the water index of refraction down to	Stan Seibert
	200 nm, like all the other optical properties. It no longer is a speed benefit, anyway.
2011-08-13	Finally get GEANT4 to stop printing debug information about all the physics ↵	Stan Seibert
	processes
2011-08-12	merge	Anthony LaTorre

2011-08-12	do not check child nodes of a node at which the distance to the bounding box ↵	Anthony LaTorre
	is further than a triangle the ray/photon has already intersected
2011-08-12	Merge	Stan Seibert

2011-08-12	Use an input and output photon queue in order to consolidate all the	Stan Seibert
	photons that didn't die during propagation into the beginning of the list. This speeds up propagation by reducing the number of partially filled CUDA warps on the next propagation step. 2.2 million photons/sec on LBNE!
2011-08-12	merge	Anthony LaTorre

2011-08-12	speedup Mesh.remove_duplicate_vertices()	Anthony LaTorre

2011-08-12	Widen the field of view in camera to make it easier to look at Cherenkov ↵	Stan Seibert
	rings from inside the detector.
2011-08-12	Allow multiple GEANT4 generator threads to keep up with the speed of photon ↵	Stan Seibert
	propagation. Defaults to 4.
2011-08-12	Segmented cylinder FOR MOAR SPEED! 1.8 Mphotons/sec!	Stan Seibert

2011-08-12	G4Generator and sim.py can now generate boosted pi0 decays.	Stan Seibert
	The ROOT data structure has been extended to allow storage of the individual gamma rays as subtracks.
2011-08-12	Refactor ROOT file writing into fileio.root.RootWriter class	Stan Seibert

2011-08-12	Storage for subtracks in ROOT data structure.	Stan Seibert

2011-08-11	Make the generator process a "daemon" process, so it will be cleaned	Stan Seibert
	up when the parent exits, and also start the generator process earlier.
2011-08-11	merge	Stan Seibert

2011-08-11	Tell CUDA to enlarge L1 cache.	Stan Seibert

2011-08-11	merge heads	Anthony LaTorre

2011-08-11	add consume() to itertoolset. checksum the number of bits shifted in each ↵	Anthony LaTorre
	iteration of the bounding volume hierarchy construction. only cache the bounding volume hierarchy information.
2011-08-11	No need for __noinline__ now that kernel caching works.	Stan Seibert

2011-08-11	Show number of registers used in CUDA kernels	Stan Seibert

2011-08-11	Switch from texture to float3 array for upper and lower bounds. 10% speed ↵	Stan Seibert
	boost!
2011-08-10	Set the GEANT4 and CUDA RNG seeds using current time and process ID if not ↵	Stan Seibert
	set on command line.