diff --git a/projects/WDM/WDM_model.m b/projects/WDM/WDM_model.m
index 013113b..14db6dd 100644
--- a/projects/WDM/WDM_model.m
+++ b/projects/WDM/WDM_model.m
@@ -3,58 +3,39 @@
 % --- FIRST LINE: evaluate settings located beside this script ---
 run(fullfile(fileparts(mfilename('fullpath')),'WDM_settings.m'));
 
-% optional: size local parpool from Slurm allocation (minimal, no arrays)
-cpus = str2double(getenv('SLURM_CPUS_PER_TASK'));
-if ~isfinite(cpus) || cpus < 1, cpus = max(1, feature('numcores')); end
-p = gcp('nocreate'); if isempty(p), parpool('local', cpus); end
-
 M               = 4;
 m = floor(log2(M)*10)/10;
 fsym            = 224e9;
-
-apply_pulsef    = 1;
 fdac            = 2*fsym;
 fadc            = 2*fsym;
+link_length     = 0;
+wavelengthplan  = calcWavelengthPlan(16,400e9,1310);
+wavelengthplan  = [1295,1305,1315,1325];
 random_key      = 2;
 
-rcalpha         = 0.05;
-kover           = 8;
+% Laser / Modulator
 vbias_rel       = 0.5;
 u_pi            = 3.2;
 vbias           = -vbias_rel*u_pi;
-
 laser_linewidth     = 0e6;
 
-
-% Channel
-link_length     = 2;
-rop = -5;
-
+% EQ SETTINGS
 vnle_order1 = 50;
 vnle_order2 = 0;
 vnle_order3 = 0;
-
 vnle_order=[vnle_order1,vnle_order2,vnle_order3];
 dfe_order = [0 0 0];
-
-alpha = 0;
-
 len_tr  = 4096*2;
-
 mu_ffe1 = 0.0001;
 mu_ffe2 = 0.0008;
 mu_ffe3 = 0.001;
 mu_dc = 0.005;
 % mu_dc = 0;
-
 mu_ffe = [mu_ffe1 mu_ffe3 mu_ffe3];
 mu_dfe = 0.0004;
 
-dfe_ = sum(dfe_order)>0;
-
-doub_mode = db_mode.no_db;
-cols = linspecer(6);
 
+rcalpha     = 0.05;
 Pform       = Pulseformer("fsym",fsym,"fdac",4*fsym,"pulse","rc","pulselength",16,"alpha",rcalpha);
 
 db_precode = 0;
@@ -63,20 +44,12 @@ duob_mode = db_mode.no_db;
 apply_pulsef = 0;
 
 
-% AWG("fdac",fdac,"f_cutoff",fsym,"lpf_active",0,"kover",kover,"bit_resolution",12,"upsampling_method","samplehold","precomp_sinc_rolloff",0).process(Digi_sig);
-
-%%%%% Low-pass el. components %%%%%%
-% tx_bwl = 100e9;
-% El_sig = Filter('filtdegree',3,"f_cutoff",tx_bwl,"fs",fdac*kover,"filterType",filtertypes.butterworth,"active",true).process(El_sig);
-
-wavelengthplan = calcWavelengthPlan(16,400e9,1310);
-wavelengthplan = [1295,1305,1315,1325];
 N = numel(wavelengthplan);
 f_plan = physconst('lightspeed')./(wavelengthplan.*1e-9);
 margin = 25e12; % some THz left and right
 f_span = (max(f_plan)+margin)-(min(f_plan)-margin);
 f_nyq = f_span/2;
-
+kover = 8;
 upsample_required = f_nyq./(fdac*kover/2);
 upsample_pow = 2^nextpow2(upsample_required);
 upsample_ceil = ceil(upsample_required);
@@ -88,9 +61,9 @@ signal_cell = {};
 Symbols = {};
 Tx_bits = {};
 
-rop = linspace(-11,0,6); %12 workers when parallel
+rop = linspace(-11,0,8);
 
-num_realiz = 10;
+num_realiz = 1;
 gmi_vnle_bitwise = NaN(length(wavelengthplan),length(rop),num_realiz);
 snr_vnle= NaN(length(wavelengthplan),length(rop),num_realiz);
 ber_vnle= NaN(length(wavelengthplan),length(rop),num_realiz);
@@ -224,6 +197,21 @@ for realiz = 1:num_realiz
 
 end
 
+figure();hold on;
+cols = linspecer(N);
+for l = 1:N
+    % plot(rop,mean(squeeze(ber_vnle(l,:,:)),2,'omitnan'),'Marker','*','DisplayName',sprintf('Ch: %d',wavelengthplan(l)))
+    plot(rop,squeeze(ber_vnle(l,:,:)),'Marker','*','DisplayName',sprintf('Ch: %d',wavelengthplan(l)),'Color',cols(l,:),'HandleVisibility','on')
+end
+yline([3.8e-3,2.2e-4],'HandleVisibility','off');
+ylabel('BER');
+xlabel('ROP')
+title('BER vs. ROP');
+set(gca, 'XScale', 'linear', ...
+    'YScale', 'log', ...
+    'TickLabelInterpreter', 'latex', ...
+    'FontSize', 11);
+
 
 res = struct();                      % placeholder
 res.gmi_vnle_bitwise = gmi_vnle_bitwise;              % placeholder
@@ -256,25 +244,10 @@ fname = sprintf('WDM_%s_%s_%s.mat', char(t), host, jobid);
 save(fullfile(output_root, fname), 'res', '-v7.3');
 fprintf('Saved results to: %s\n', fullfile(output_root, fname));
 
-
-
-
-
-
-figure();hold on;
-cols = linspecer(N);
-for l = 1:N
-    % plot(rop,mean(squeeze(ber_vnle(l,:,:)),2,'omitnan'),'Marker','*','DisplayName',sprintf('Ch: %d',wavelengthplan(l)))
-    plot(rop,squeeze(ber_vnle(l,:,:)),'Marker','*','DisplayName',sprintf('Ch: %d',wavelengthplan(l)),'Color',cols(l,:),'HandleVisibility','on')
-end
-yline([3.8e-3,2.2e-4],'HandleVisibility','off');
-ylabel('BER');
-xlabel('ROP')
-title('BER vs. ROP');
-set(gca, 'XScale', 'linear', ...
-    'YScale', 'log', ...
-    'TickLabelInterpreter', 'latex', ...
-    'FontSize', 11);
+% --- save as PNG ---
+outname = fullfile(output_root, 'BER_vs_ROP.png');  % saves to current folder
+print(gcf, outname, '-dpng', '-r300');      % 300 dpi
+fprintf('Saved figure to %s\n', outname);
 
 
 function dispersion_vector = getDispersionVector(N, D, ref_zdw, randomize_ZDW, randomkey)
diff --git a/projects/WDM/WDM_settings.m b/projects/WDM/WDM_settings.m
index ce45432..49ddaf4 100644
--- a/projects/WDM/WDM_settings.m
+++ b/projects/WDM/WDM_settings.m
@@ -6,5 +6,29 @@ else
     addpath(genpath('/work_beegfs/sutef391/imdd_simulation'));
 end
 
-% Define where results should be written (used by WDM_model.m)
-output_root = '/work_beegfs/sutef391/results_WDM';
\ No newline at end of file
+% Quiet the ambiguous CET warning (best is to set TZ in sbatch; see below)
+warning('off','MATLAB:datetime:AmbiguousTimeZone');
+
+% How many workers?
+cpus = str2double(getenv('SLURM_CPUS_PER_TASK'));
+if ~isfinite(cpus) || cpus < 1, cpus = max(1, feature('numcores')); end
+
+% Use a per-job, node-local JobStorageLocation to avoid stale locks on $HOME
+% Prefer $TMPDIR if your cluster provides it, else tempdir().
+tmpbase = getenv('TMPDIR');
+if isempty(tmpbase), tmpbase = tempdir; end
+jsl = fullfile(tmpbase, sprintf('matlab_jobstorage_%s_%s', ...
+    getenv('USER'), getenv('SLURM_JOB_ID')));
+if ~exist(jsl,'dir'); mkdir(jsl); end
+
+% Configure the local cluster explicitly and start the pool
+c = parcluster('local');
+c.NumWorkers = cpus;
+c.JobStorageLocation = jsl;
+
+p = gcp('nocreate');
+if isempty(p) || p.NumWorkers ~= cpus
+    if ~isempty(p), delete(p); end
+    p = parpool(c, cpus);           % avoids the “queued” state
+end
+fprintf('parpool up with %d workers; JobStorage=%s\n', p.NumWorkers, c.JobStorageLocation);
\ No newline at end of file