source: vis_dev/vis-2.3/share/help/print_tfm_optionsCmd.txt @ 30

Last change on this file since 30 was 14, checked in by cecile, 14 years ago

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1
2  print_tfm_options - print information about the transition function based
3  image computation options currently in use
4     _________________________________________________________________
5
6   print_tfm_options [-h] [-H]
7
8   Prints  information  about the current transition function based image
9   computation options.
10
11   Command options:
12
13   -h
14          Print the command usage.
15
16   -H
17          Print the transition function based image computation set command
18          usage.
19
20   Set parameters: The transition function based image computation options are
21   specified with the set command.
22
23   tfm_split_method <method>
24          Specify a splitting method.
25
26          method must be one of the following:
27
28          0 : input splitting (default)
29
30          1 : output splitting
31
32          2 : mixed (input split + output split)
33
34   tfm_input_split <method>
35          Specify an input splitting method.
36
37          method must be one of the following:
38
39          0 : support before splitting (default)
40
41          1 : support after splitting
42
43          2 : estimate BDD size after splitting
44
45          3 : top variable
46
47   tfm_pi_split_flag <method>
48          Specify whether to allow primary input variables to be chosen as a
49          splitting variable.
50
51          method must be one of the following:
52
53          yes : choose either state or input variable as splitting variable
54          (default)
55
56          no : choose only state variable as splitting variable
57
58   tfm_range_comp <method>
59          Specify a method whether to convert image to range computataion.
60
61          method must be one of the following:
62
63          0 : do not convert to range computation
64
65          1 : convert image to range computation (default)
66
67          2 : use a threshold (tfm_range_threshold, default for hybrid)
68
69   tfm_range_threshold <number>
70          This option is valid only when the tfm_range_comp is set to 2. This
71          threshold  is  used  to  determine  whether to convert to range
72          computation by comparing the shared BDD size of function vector after
73          constraining w.r.t. from set to its original size. If the size is
74          less than the origianl size * , then we convert to range computation.
75          The default value is 10.
76
77   tfm_range_try_threshold <number>
78          This option is valid only when the tfm_range_comp is set to 2. This
79          option is used to disable checking the condition if it fails to
80          convert consecutively times. The default value is 2.
81
82   tfm_range_check_reorder <method>
83          Specify  whether  to  force  to  call variable reordering after
84          constraining function vector w.r.t. from set and before checking the
85          condition.
86
87          method must be one of the following:
88
89          yes : force to reorder before checking tfm_range_threshold
90
91          no : do not reorder (default)
92
93   tfm_tie_break_mode <method>
94          Specify  a tie breaking method when we have a tie in choosing a
95          splitting variable in input and output splitting method.
96
97          method must be one of the following:
98
99          0 : the closest variable to top (default)
100
101          1 : the smallest BDD size after splitting
102
103   tfm_output_split <method>
104          Specify an output splitting method.
105
106          method must be one of the following:
107
108          0 : smallest BDD size (default)
109
110          1 : largest BDD size
111
112          2 : top variable
113
114   tfm_turn_depth <number>
115          This option is valid only when mixed or hybrid method is chosen. This
116          is used to determine when to switch to the other method at which
117          depth  of recursion. The default is 5 for tfm and -1 for hybrid
118          method.
119
120   tfm_find_decomp_var <method>
121          Specify a method whether to try to find a decomposable variable
122          (meaning articulation point) first if any.
123
124          method must be one of the following:
125
126          yes : try to find a decomposable variable (articulation point)
127
128          no : do not try (default)
129
130   tfm_sort_vector_flag <method>
131          Specify a method whether to sort function vectors to increase cache
132          performance.
133
134          method must be one of the following:
135
136          yes : sort function vectors (default for tfm)
137
138          no : do not sort (default for hybrid)
139
140   tfm_print_stats <method>
141          Specify a method whether to print statistics for cache and recursions
142          at the end of job.
143
144          method must be one of the following:
145
146          yes : print statistics
147
148          no : do not print (default)
149
150   tfm_print_bdd_size <method>
151          Specify a method whether to print the BDD size of all intermediate
152          product.
153
154          method must be one of the following:
155
156          yes : print BDD size
157
158          no : do not print (default)
159
160   tfm_split_cube_func <method>
161          Specify a method whether to try to find a cube in function vector in
162          input splitting, then perform output splitting once w.r.t. the cube.
163
164          method must be one of the following:
165
166          yes : try cube splitting
167
168          no : do not try (default)
169
170   tfm_find_essential <method>
171          Specify a method whether to try to find essential variables in from
172          set. If a variable occurs in all cubes of a BDD, the variable is
173          called essential. If exists, minimize both function vector and the
174          from set with the essential cube.
175
176          method must be one of the following:
177
178          0 : do not try (default)
179
180          1 : try to find essential variables
181
182          2 : on and off dynamically
183
184   tfm_print_essential <method>
185          Specify  a  method whether to print information about essential
186          variables.
187
188          method must be one of the following:
189
190          0 : do not print (default)
191
192          1 : print only at end
193
194          2 : print at every image computation
195
196   tfm_use_cache <method>
197          Specify whether to use an image cache.
198
199          method must be one of the following:
200
201          0 : do not use cache (default for hybrid)
202
203          1 : use cache (default)
204
205          2 : store all intermediate results
206
207   tfm_global_cache <method>
208          Specify a method whether to use one global image cache, or one image
209          cache per each machine.
210
211          method must be one of the following:
212
213          yes : use only one global cache (default)
214
215          no : use one cache per machine
216
217   tfm_max_chain_length <number>
218          This option is used to set the maximum number of items in a slot for
219          conflict. The default is 2.
220
221   tfm_init_cache_size <number>
222          This option is used to set the initial cache size. The number is
223          recommended to be a prime number. Currently, we do not resize the
224          cache size, but for the future extension, we named initial. The
225          default is 1001.
226
227   tfm_auto_flush_cache <method>
228          Specify a method to flush image cache.
229
230          method must be one of the following:
231
232          0 : flush cache only when requested
233
234          1 : flush cache at the end of image computation (default)
235
236          2 : flush cache before reordering
237
238   tfm_compose_intermediate_vars <method>
239          Specify a method whether to compose all intermediate variables.
240
241          method must be one of the following:
242
243          yes : compose all
244
245          no : do not compose (default)
246
247   tfm_pre_split_method <method>
248          Specify a splitting method for preimage computation.
249
250          method must be one of the following:
251
252          0 : input splitting (domain cofactoring, default)
253
254          1 : output splitting (constraint cofactoring)
255
256          2 : mixed (input split + output split)
257
258          3 : substitution
259
260   tfm_pre_input_split <method>
261          Specify an input splitting method for preimage computation.
262
263          method must be one of the following:
264
265          0 : support before splitting (default)
266
267          1 : support after splitting
268
269          2 : estimate BDD size after splitting
270
271          3 : top variable
272
273   tfm_pre_output_split <method>
274          Specify an output splitting method for preimage computation.
275
276          method must be one of the following:
277
278          0 : smallest BDD size (default)
279
280          1 : largest BDD size
281
282          2 : top variable
283
284   tfm_pre_dc_leaf_method <method>
285          Specify a method to switch to another method to complete preimage
286          computation in domain cofactoring method when no more splitting
287          variable exist.
288
289          method must be one of the following:
290
291          0 : substitution (default)
292
293          1 : constraint cofactoring
294
295          2 : hybrid
296
297   tfm_pre_minimize <method>
298          Specify a method whether to minimize transition function vector w.r.t
299          a chosen function in constraint cofactoring method. This option is
300          recommended to use when image cache is disabled, because even though
301          this option can minimize the BDD size of function vector, this may
302          degrade cache performance.
303
304          method must be one of the following:
305
306          yes : minimize function vector w.r.t. a chosen function in constraint
307          cofactoring
308
309          no : do not minimize (default)
310
311   tfm_verbosity <verbosity>
312          Specify the level of printing information related with transition
313          function method.
314
315          verbosity must be 0 - 2 (default = 0).
316     _________________________________________________________________
317
318   Last updated on 20100410 00h02
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