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Add NEURON 9 compatibility to mod files #822

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27da9d7
Add NEURON 9 compatibility to mod files
Oct 8, 2025
7662337
Fix mechanism loading
Oct 8, 2025
842abf5
Partially revert
Oct 14, 2025
3e88489
Add THREADSAFE to mod file
Oct 14, 2025
08f75ae
Use `load_mechanisms` from NEURON itself
Oct 16, 2025
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9 changes: 7 additions & 2 deletions pyNN/neuron/nmodl/gif.mod
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Original file line number Diff line number Diff line change
Expand Up @@ -55,8 +55,13 @@ VERBATIM
#include<stdio.h>
#include<math.h>

#ifndef NRN_VERSION_GTEQ_8_2_0
double nrn_random_pick(void* r);
void* nrn_random_arg(int argpos);
#define RANDCAST
#else
#define RANDCAST (Rand*)
#endif
ENDVERBATIM

ASSIGNED {
Expand Down Expand Up @@ -199,7 +204,7 @@ VERBATIM
: each instance. However, the corresponding hoc Random
: distribution MUST be set to Random.negexp(1)
*/
value = nrn_random_pick(_p_rng);
value = nrn_random_pick(RANDCAST _p_rng);
//printf("random stream for this simulation = %lf\n",value);
return value;
}else{
Expand All @@ -208,7 +213,7 @@ ENDVERBATIM
: independent of nhost or which host this instance is on
: is desired, since each instance on this cpu draws from
: the same stream
value = scop_random(1)
value = scop_random()
VERBATIM
}
ENDVERBATIM
Expand Down
7 changes: 6 additions & 1 deletion pyNN/neuron/nmodl/netstim2.mod
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Expand Up @@ -72,8 +72,13 @@ FUNCTION invl(mean (ms)) (ms) {
}
}
VERBATIM
#ifndef NRN_VERSION_GTEQ_8_2_0
double nrn_random_pick(void* r);
void* nrn_random_arg(int argpos);
#define RANDCAST
#else
#define RANDCAST (Rand*)
#endif
ENDVERBATIM

FUNCTION erand() {
Expand All @@ -84,7 +89,7 @@ VERBATIM
: each instance. However, the corresponding hoc Random
: distribution MUST be set to Random.negexp(1)
*/
_lerand = nrn_random_pick(_p_donotuse);
_lerand = nrn_random_pick(RANDCAST _p_donotuse);
}else{
/* only can be used in main thread */
if (_nt != nrn_threads) {
Expand Down
9 changes: 7 additions & 2 deletions pyNN/neuron/nmodl/quantal_stp.mod
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Expand Up @@ -82,8 +82,13 @@ NET_RECEIVE(w, available, t_last (ms)) {
}

VERBATIM
#ifndef NRN_VERSION_GTEQ_8_2_0
double nrn_random_pick(void* r);
void* nrn_random_arg(int argpos);
#define RANDCAST
#else
#define RANDCAST (Rand*)
#endif
ENDVERBATIM

PROCEDURE setRNG() {
Expand All @@ -110,12 +115,12 @@ VERBATIM
: each instance. However, the corresponding hoc Random
: distribution MUST be set to Random.negexp(1)
*/
value = nrn_random_pick(_p_rng);
value = nrn_random_pick(RANDCAST _p_rng);
//printf("random stream for this simulation = %lf\n",value);
return value;
} else {
ENDVERBATIM
value = scop_random(1)
value = scop_random()
VERBATIM
}
ENDVERBATIM
Expand Down
9 changes: 7 additions & 2 deletions pyNN/neuron/nmodl/stochastic_synapse.mod
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Expand Up @@ -21,8 +21,13 @@ VERBATIM
#include<stdio.h>
#include<math.h>

#ifndef NRN_VERSION_GTEQ_8_2_0
double nrn_random_pick(void* r);
void* nrn_random_arg(int argpos);
#define RANDCAST
#else
#define RANDCAST (Rand*)
#endif

ENDVERBATIM

Expand Down Expand Up @@ -63,12 +68,12 @@ VERBATIM
: each instance. However, the corresponding hoc Random
: distribution MUST be set to Random.negexp(1)
*/
value = nrn_random_pick(_p_rng);
value = nrn_random_pick(RANDCAST _p_rng);
//printf("random stream for this simulation = %lf\n",value);
return value;
} else {
ENDVERBATIM
value = scop_random(1)
value = scop_random()
VERBATIM
}
ENDVERBATIM
Expand Down
9 changes: 7 additions & 2 deletions pyNN/neuron/nmodl/stochastic_tsodyksmarkram.mod
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Expand Up @@ -85,8 +85,13 @@ NET_RECEIVE(w, p_surv, t_surv) {
}

VERBATIM
#ifndef NRN_VERSION_GTEQ_8_2_0
double nrn_random_pick(void* r);
void* nrn_random_arg(int argpos);
#define RANDCAST
#else
#define RANDCAST (Rand*)
#endif
ENDVERBATIM

PROCEDURE setRNG() {
Expand All @@ -113,12 +118,12 @@ VERBATIM
: each instance. However, the corresponding hoc Random
: distribution MUST be set to Random.negexp(1)
*/
value = nrn_random_pick(_p_rng);
value = nrn_random_pick(RANDCAST _p_rng);
//printf("random stream for this simulation = %lf\n",value);
return value;
} else {
ENDVERBATIM
value = scop_random(1)
value = scop_random()
VERBATIM
}
ENDVERBATIM
Expand Down
1 change: 1 addition & 0 deletions pyNN/neuron/nmodl/tsodyksmarkram.mod
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Expand Up @@ -5,6 +5,7 @@ Andrew Davison, UNIC, CNRS, 2013
ENDCOMMENT

NEURON {
THREADSAFE
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@JCGoran JCGoran Oct 16, 2025

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See discussion in neuronsimulator/nrn#3638, in particular neuronsimulator/nrn#3638 (comment)

POINT_PROCESS TsodyksMarkramWA
RANGE tau_rec, tau_facil, U, u0, tau_syn
POINTER wsyn
Expand Down
12 changes: 7 additions & 5 deletions pyNN/neuron/simulator.py
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Expand Up @@ -92,11 +92,13 @@ def load_mechanisms(path):
else:
arch_list = [platform.machine(), 'i686', 'x86_64', 'powerpc', 'umac']
for arch in arch_list:
lib_path = os.path.join(path, arch, '.libs', 'libnrnmech.so')
if os.path.exists(lib_path):
h.nrn_load_dll(lib_path)
nrn_dll_loaded.append(path)
return
path_list = ['.so', '.dylib']
for p in path_list:
lib_path = os.path.join(path, arch, f'libnrnmech{p}')
if os.path.exists(lib_path):
h.nrn_load_dll(lib_path)
nrn_dll_loaded.append(path)
return
raise IOError(
f"NEURON mechanisms not found in {path}. "
"You may need to run 'nrnivmodl' in this directory.")
Expand Down