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发表于 2019-3-22 11:40:16
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我设置了:
- set_var constraint_delay_degrade 0.3
- set_var constraint_delay_degrade_abstol 1e-12
复制代码 然后还把那个template中index变小了,
- define_template -type delay \
- -index_1 {1 12 27 47 67 87 102 127 147 167 187 } \
- -index_2 {0.001 0.002 0.0035 0.005 0.0065 0.008 0.0095 0.011 0.0125 0.014 0.016 } \
- delay_template_11x11
- define_template -type constraint \
- -index_1 {1 47 187 } \
- -index_2 {1 47 187 } \
- constraint_template_3x3
复制代码 可是结果还是不行,仍然报错:
- ERROR (LIB-52): The constraint search failed to find a solution within the search range for arc of cell:'DFM1RA_st', r_pin:'CK', r_pin dir:'r', pin:'D', pin dir:'r', type:'hold_rising rise_constraint', vector:'RRxx'. This cell will be marked as failed and the constraint data will be set to: 1.0 (see constraint_failed_value). To debug, review the saved simulation results for deck: hold_5. Possible causes include: 'constraint_delay_degrade' too large; 'constraint_delay_degrade_abstol' too large; 'constraint_check_final_state_threshold' too large;
复制代码
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