v4.1.0

Added:

• Added BSTimer package.
• Do a full BSTimer library integration with the Seismic Toolbox, updating the timing utilities to be fully dependent on BSTimer and remove old library dependency.
• Added new random boundary approach.
• Added support to staggered first order computation kernel for DPC++.
• Added support to staggered first order CPML boundary manager for DPC++.
• Added support to staggered first order computation kernel for OpenMP Offload.
• Added support to second order and staggered first order CPML boundary manager for OpenMP Offload.
• Added backend unification module for easing development process for different backend.
• Updated BS IO submodule's HEAD, and change codebase accordingly.
• Added BSBase package.
• Completely deprecated Helpers submodule.
• Added new Random Boundaries approach to all three technologies (OpenMP, OpenMP Offload and OneAPI).

v4.0.0

MS3 Release (#13)

* Pre-release

* Remove lambdas names for clang, fix timer error in bandwidth, fix correlation for GPU (#14)

Co-authored-by: ehab <ehab.nasr@brightskiesinc.com>

* Update README.md + Update CONTRIBUTORS.txt + Cleanup

Co-authored-by: ehab <ehab.nasr@brightskiesinc.com>

v3.1.0

• Added OpenMP Offload support
• Wave Approximations
  • Isotropic Second Order
• Migration Accommodators
  • Cross Correlation
• Boundary Conditions
  • None
• Forward Collectors
  • Reverse Propagation
  • Two Propagation
• Model Handlers
  • Seismic Model Handler
  • Synthetic Model Handler
• Source Injectors
  • Ricker Source Injector

v3.0.1

Fixed:

• CMake now doesn't specify a device for OneAPI
• First touch is now specific to cpu.
• Corrected the computational grid size.
• Fix typo in OneAPI generator.

v3.0.0

Added:

• Added CFL condition to OpenMP.
• Added CFL condition to OneAPI.
• Added Interpolator component.
• Added Sampler component.
• Added Compressor component.
• Added 3D support to kernels.
• Added 3D support to I/O.
• Added shots stride for trace reading.
• Added tests for all components.
• Added Generators module.
• Added Thoth (I/O) library to existing code (N.B. Old I/O still included and should completely be deprecated in later releases)
• Modified some existing features to scale up the code on clusters.
• Renewed Helpers library.
• Changed libraries from SHARED to STATIC.
• Restructured CMake
• Redesigned SeismicOperations library by adding new layer of abstraction
  • Interface:
    Contains the interface only to be implemented
  • Primitive:
    Contains the common code across different technologies
  • Concrete:
    Contains the different code for different technologies
  • Memory transfers
  • Kernels
• Reintroduced configurations' structure
• Reintroduced configurations' data structures in code
• Unify constructors of all components to take the same configurations' data structures
• Added user manual

Fixed:

• Fixed MPI in OpenMP.
• Fixed MPI in OneAPI.
• Fixed bugs in CorrelationKernel.
• Fixed bugs in TraceManager.
• Fixed 3D support to OpenMP kernels.
• Fixed CrossCorrelation's compensation.
• Fixed TwoPropagation.
• Fixed TwoPropagation w/Compression.

Removed:

• Removed ZFP submodule.

1.0.0

This is the first stable release of Brightskies' own reverse time migration.

Features

• An OpenMP version:
  • Support the following boundary conditions :
    • CPML
    • Sponge
    • Random
    • Free surface boundary functionality
  • Support the following stencil orders :
    • O(2)
    • O(4)
    • O(8)
    • O(12)
    • O(16)
  • Support 2D modeling and imaging
  • Support the following algorithmic approaches :
    • Two propagation, an IO intensive approach where you would store all of the calculated wavefields while performing the forward propagation, then read them while performing the backward propagation.
    • We provide the option to use the ZFP compression technique in the two-propagation workflow to reduce the volume of data in the IO.
    • Three propagation, a computation intensive approach where you would calculate the forward propagation storing only the last two timesteps. You would then do a reverse propagation, propagate the wavefield stored from the forward backward in time alongside the backward propagation.
  • Support solving the equation system in :
    • Second order
    • Staggered first order
  • Support manual cache blocking.
  • Support windowing to enhance performance, instead of simulating whole domain for each shot, simulate just the shot and a window surrounding it. User can specify the window and a trade-off between performance and accuracy exists according to how tight the user specifies the window around the source point.
  • Support Illumination compensation : source compensation, receiver compensation and combined compensation to enhance imaging results.
  • Support norm callback, and multiple writing formats (SegY, PNG, SU, binary and CSV).
  • Support basic post processing, mainly apply a laplacian filter and afterwards an automatic gain control with a window of 500.
• A DPC++ version:
  • Support the following boundary conditions :
    • Random
  • Support the following stencil orders :
    • O(2)
    • O(4)
    • O(8)
    • O(12)
    • O(16)
  • Support 2D modeling and imaging
  • Support the following algorithmic approaches :
    • Three propagation, a computation intensive approach where you would calculate the forward propagation storing only the last two timesteps. You would then do a reverse propagation, propagate the wavefield stored from the forward backward in time alongside the backward propagation.
  • Support solving the equation system in :
    • Second order
  • Support windowing to enhance performance, instead of simulating whole domain for each shot, simulate just the shot and a window surrounding it. User can specify the window and a trade-off between performance and accuracy exists according to how tight the user specifies the window around the source point.
  • Support Illumination compensation : source compensation, receiver compensation and combined compensation to enhance imaging results.
  • Support norm callback, and multiple writing formats (SegY, PNG, SU, binary and CSV).
  • Support basic post processing, mainly apply a laplacian filter and afterwards an automatic gain control with a window of 500.