Allow for the possibility of using the bytecode representation of the model for any task

Almost done.

We plan a change in the semantics of stack_solve_algo. Currently, values 0 and 1 actually implement the same algorithm (sim1/simk don’t actually implement the original relaxation algorithm). We propose to associate to value 1 the original relaxation algorithm, which will be available in bytecode at first (slower, but less memory-consuming).

• Extends the algorithms compatible with bytecode to compute the steady-state. The new values for solve_algo are:
  • 0: fsolve
  • 1: solve1
  • 2, 4: solve1 + block decomposition
  • 3: csolve
  • 5: LU decomposition with UMFPack (method handling sparse matrix in Matlab)
  • 6: GMRES
  • 7: BiCGStab
  • 8: bytecode own solver (use gaussian elimination + sparse matrix)

• As of 5f0dac24, the test file block_bytecode/ls2003.mod crashes under Octave
• We should probably swap values 5 and 8 for solve_algo, for consistency with Dynare 4.1
• The new values for stack_solve_algo and solve_algo (in combination with block/bytecode) need to be documented on the wiki and in the reference manual (on the wiki, we should keep separate sections on Dynare 4.1 and Dynare 4.2)

Replying to [comment:5 sebastien]:

• As of 5f0dac24, the test file block_bytecode/ls2003.mod crashes under Octave

Fixed in 39718c86

• We should probably swap values 5 and 8 for solve_algo, for consistency with Dynare 4.1

Fixed in 39718c86

• The new values for stack_solve_algo and solve_algo (in combination with block/bytecode) need to be documented on the wiki and in the reference manual (on the wiki, we should keep separate sections on Dynare 4.1 and Dynare 4.2)

Fixed in reference manual in 55c6089d

Remains to be done:

• update wiki pages
• fix crash in new testsuite

Crashes in testsuite fixed as of 1aceb504

Replying to [comment:7 sebastien]:

Crashes in testsuite fixed as of 1aceb504 No, the crash is still here.

Testsuite crashes as of ce072236.

Wiki still needs updating.

The previous comment should read:

Testsuite crashes '''fixed''' as of ce072236.

Wiki still needs updating.

Wiki fixed on 2011-01-21

mentioned in issue #1878 (closed)